Number of nX4 array permutations with each element not moved or moved diagonally or antidiagonally by one.

A189275

Number of nX4 array permutations with each element not moved or moved diagonally or antidiagonally by one.

Terms

    a(0) =1a(1) =25a(2) =225a(3) =2704a(4) =29241a(5) =323761a(6) =3553225a(7) =39100009a(8) =429981696a(9) =4729725529a(10) =52022767225a(11) =572215089601

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