

A230172


Number of nX4 0..2 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to at least one element with value 2x(i,j)


1



9, 1407, 78849, 4722977, 284444079, 17072965263, 1027868078181, 61861526624839, 3721702070420191, 223920929460093089, 13473042937456532657, 810647385075641076549, 48774886700839338028985, 2934683063063203660000047
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