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A263956
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Number of (1+2) X (n+2) arrays of permutations of 0..n*3+5 filled by rows with each element moved 0 or 1 knight moves, and rows and columns in increasing lexicographic order.
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1
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6, 40, 118, 354, 1209, 4334, 14525, 46022, 141006, 427611, 1270118, 3707059, 10650367, 30235396, 84926968, 236340047, 652236286, 1787173735, 4866827711, 13182285189, 35538045627, 95417738007, 255294004187, 680978483881
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