

A230678


Number of 4Xn 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value 2x(i,j)


1



0, 423, 17271, 730503, 37034355, 1844154933, 91258562955, 4522036938501, 224105728666527, 11105653159056021, 550345235166102387, 27272655718068842535, 1351510936295338591335, 66974836192708860686913
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