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A209099 Number of nX7 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
365, 165632, 81254376, 40556341276, 20321585350224, 10191444894367900, 5112092569118325704, 2564363579403254284620, 1286364276359163718904168, 645281146190219629386029844, 323693585213812977261192741044 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A209100
LINKS
FORMULA
Empirical: a(n) = 747*a(n-1) -147770*a(n-2) +13767161*a(n-3) -744653684*a(n-4) +26581250215*a(n-5) -695207333006*a(n-6) +14759817640723*a(n-7) -277760418691959*a(n-8) +4818498687693894*a(n-9) -76394118399894709*a(n-10) +1087272633889124267*a(n-11) -13781949249633025934*a(n-12) +154877879063702829937*a(n-13) -1530486551719044001957*a(n-14) +13153680955142056537404*a(n-15) -97057933858981232648357*a(n-16) +604009502946148839126239*a(n-17) -3089743014121715957566207*a(n-18) +12592151665916950689366304*a(n-19) -39754681120743615063631342*a(n-20) +95137341741302104796392420*a(n-21) -157046844212176575473908358*a(n-22) +62809971153790464358833542*a(n-23) +274260546953763747783830412*a(n-24) +2277040460294389799199241820*a(n-25) -16807391841560612463088548960*a(n-26) +24466406030744021830227782360*a(n-27) +110770739770822017548456685488*a(n-28) -642543090446277892020887588984*a(n-29) +1444810249046399642357458572124*a(n-30) -1039066917861135086134740251232*a(n-31) -1913422528148454603288634391464*a(n-32) +4382959090538650287480505632320*a(n-33) -420162726254070213081625756976*a(n-34) -10248211114440498997980265577120*a(n-35) +19099890867084707788818392405696*a(n-36) -18080871254247582043431141300352*a(n-37) +9535746814747597050087649329920*a(n-38) -7274842106933434445259296042752*a(n-39) +24412291656612509021701274945408*a(n-40) -50569037378415505084329421866496*a(n-41) +49696873654792766125531687784960*a(n-42) -3207612319613312961503561953792*a(n-43) -54507430486119902763301778119680*a(n-44) +71876543544959492841651732609024*a(n-45) -41832833113226911264957080469504*a(n-46) +2042228750173828354218287046656*a(n-47) +16335249204577141685269880815616*a(n-48) -14493780574353894230229010939904*a(n-49) +7212093727799570963008951418880*a(n-50) -2258955815739930161535614189568*a(n-51) +173106370971311909976634556416*a(n-52) +236456074127730455885312425984*a(n-53) -132988789131444826419830456320*a(n-54) +57804329724143223598793883648*a(n-55) -21600473043383892821286060032*a(n-56) -190229647086921884471656448*a(n-57) +3407643142423947053302284288*a(n-58) -1076075759469831874666299392*a(n-59) +124348221639171208497856512*a(n-60) -2055059748711593966305280*a(n-61) -370952494107253014528000*a(n-62) for n>65
EXAMPLE
Some solutions for n=4
..0..0..0..0..0..0..0....0..0..0..1..1..2..2....0..0..1..0..0..1..2
..1..2..1..1..2..1..2....1..2..0..2..1..0..1....1..0..1..1..0..2..0
..1..0..2..1..2..1..2....1..0..1..2..0..1..2....0..1..0..1..0..2..1
..2..1..2..0..2..0..2....2..0..2..0..2..1..2....1..2..2..0..2..0..0
CROSSREFS
Sequence in context: A275351 A241376 A208566 * A233017 A233081 A209106
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 05 2012
STATUS
approved

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Last modified February 23 09:42 EST 2024. Contains 370276 sequences. (Running on oeis4.)