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A209105 Number of 6Xn 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors 1
122, 34096, 7154944, 1404480904, 272236743760, 52675800891748, 10191444894367900, 1971869773009191300, 381529277930963765396, 73820911678439362478268, 14283392072671820658161260 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A209100

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 483*a(n-1) -93045*a(n-2) +9895994*a(n-3) -655000699*a(n-4) +28153218507*a(n-5) -771472287050*a(n-6) +11575521770914*a(n-7) -5333969777492*a(n-8) -3460511755733129*a(n-9) +60619944832280219*a(n-10) -122454879122841094*a(n-11) -9610060024477677636*a(n-12) +119490257201622127599*a(n-13) +207423246569123218904*a(n-14) -15418046735278157348540*a(n-15) +85958015930994934073828*a(n-16) +809517273485108604329443*a(n-17) -10872862333905128370604528*a(n-18) -553924361897541639230341*a(n-19) +628503974578083970787751095*a(n-20) -2441837003902470322705776546*a(n-21) -19135804539591412466515125841*a(n-22) +157196371353874391098869608556*a(n-23) +184930685928293621578721897714*a(n-24) -5212791777478985863598283828640*a(n-25) +8343380811716464763432941624104*a(n-26) +99943078075370200668702342185854*a(n-27) -385486750658814649071993027833855*a(n-28) -947326129545439583693615334446414*a(n-29) +7617076417557384976850188004727513*a(n-30) -1587365613230665275472648686777016*a(n-31) -81893089783126645169411368168862676*a(n-32) +154905729052219569334495329758007735*a(n-33) +392446436386226179411197434377941811*a(n-34) -1789366396909098001371959030444799187*a(n-35) +1364382304774676286186085515863856887*a(n-36) +7450756681407735007607770239017405077*a(n-37) -32742420723798992453476401619165532832*a(n-38) +34882707064638274850232798681677400146*a(n-39) +196690238938567903829556617524922100465*a(n-40) -642195656452343483207376794444201641353*a(n-41) -302741845834579655279069984112105879663*a(n-42) +3898930711936348369962805243570318234338*a(n-43) -2811628196998770649303159460561101126472*a(n-44) -12699154307737793869661985076853426155598*a(n-45) +20357131154883109280177933384191456925974*a(n-46) +20643883539066233274084030626803696790656*a(n-47) -64755513215769597861644458739579161901156*a(n-48) -928177211363479033745240114012556539704*a(n-49) +116393013534805718816923463675254988333020*a(n-50) -62922764613474031277505408520521940164664*a(n-51) -117636718952533538147029798845965591298928*a(n-52) +122662194993078191268927575331077554092224*a(n-53) +53377954500120792927391233551189754963712*a(n-54) -111660132397303689829356851421252048286208*a(n-55) +7919142148317395919389979426042637954304*a(n-56) +51518409827438947321954214341306278669824*a(n-57) -18670349951681657511291462879827883996160*a(n-58) -10933253490659848148544920316312898695168*a(n-59) +6995956832033163694328578109174268706816*a(n-60) +1686799976967671987881917375839533137920*a(n-61) -1253524043678855280232828496400957308928*a(n-62) -906202586627792174825114955918683930624*a(n-63) +309998526763988330640199202118903529472*a(n-64) +148552622821827192644092436874780475392*a(n-65) -20331273732734054176046805671907164160*a(n-66) +93663781756651920952176320882940051456*a(n-67) -77028642178807633010626944466396643328*a(n-68) +1689650677968769324222545429484535808*a(n-69) +8972893867255780734625567627712397312*a(n-70) -855929165188635245245315361739374592*a(n-71) -260331530489786581111126222776041472*a(n-72) for n>76

EXAMPLE

Some solutions for n=4

..0..0..0..1....0..0..1..2....0..0..0..1....0..0..0..0....0..0..1..1

..1..1..2..0....1..2..1..0....2..1..0..2....1..1..1..2....1..2..0..2

..0..1..2..2....2..1..2..1....2..0..1..2....0..2..0..1....2..1..2..1

..0..0..0..2....2..0..1..2....1..0..1..2....2..0..1..0....2..0..1..2

..1..2..0..0....0..2..0..2....0..2..0..2....0..2..2..0....1..2..0..2

..1..0..1..0....0..1..2..1....2..0..1..2....0..1..0..1....1..2..0..2

CROSSREFS

Sequence in context: A282055 A233080 A280678 * A223131 A208256 A198714

Adjacent sequences:  A209102 A209103 A209104 * A209106 A209107 A209108

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 05 2012

STATUS

approved

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Last modified August 17 07:10 EDT 2022. Contains 356184 sequences. (Running on oeis4.)