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A208565
Number of nX6 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 left-upward diagonal neighbors
1
122, 21632, 4098492, 788922798, 152454784170, 29489112993258, 5705351522369620, 1103893186338679596, 213588257890227210061, 41326538036950203061147, 7996150994528203520921414
OFFSET
1,1
COMMENTS
Column 6 of A208567
LINKS
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>73
EXAMPLE
Some solutions for n=4
..0..0..1..0..1..1....0..1..2..1..2..0....0..0..1..2..0..2....0..0..1..2..1..1
..0..1..2..0..1..0....0..1..0..2..0..1....1..1..2..1..2..1....1..1..2..0..1..2
..0..1..2..0..1..2....2..0..1..0..1..2....2..2..1..2..0..2....2..2..1..1..2..0
..0..2..0..2..0..1....1..1..2..0..1..2....2..0..0..0..2..1....1..0..2..2..0..1
CROSSREFS
Sequence in context: A241375 A275094 A275350 * A209098 A233016 A282055
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 28 2012
STATUS
approved