

A229454


Number of defective 3colorings of an n X 3 0..2 array connected horizontally and vertically with exactly one mistake and colors introduced in rowmajor 0..2 order.


1



2, 20, 140, 863, 4962, 27313, 145932, 763031, 3924694, 19928429, 100145056, 498967875, 2468341930, 12136538329, 59362244596, 289033801519, 1401690320766, 6773621702213, 32630424771912, 156746889564187, 751052250017618
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