

A229571


Number of defective 4colorings of an n X n 0..3 array connected horizontally, vertically, diagonally and antidiagonally with exactly one mistake, and colors introduced in rowmajor 0..3 order


0



0, 6, 76, 312, 924, 2440, 6108, 14840, 35356, 83016, 192636, 442552, 1007868, 2277704, 5112220, 11403768, 25297500, 55837384, 122684220, 268436408, 585106492
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