

A231021


Number of (n+3)X(4+3) 0..3 black square subarrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, and upper left element zero


1



314, 10534, 85196, 3160834, 22328204, 859128648, 6209914254, 235891268252, 1699524352562, 64719602281334, 466469474405852, 17757501795145746, 127984378310902748, 4872242085182488788, 35115886181142148294
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