a(n) is the permanent of the n X n matrix A(n) that is defined as A[i,j,n] = (n mod 2) + abs((n + 1)/2 - i) + abs((n + 1)/2 - j).

A349108

a(n) is the permanent of the n X n matrix A(n) that is defined as A[i,j,n] = (n mod 2) + abs((n + 1)/2 - i) + abs((n + 1)/2 - j).

Terms

    a(0) =1a(1) =1a(2) =2a(3) =66a(4) =292a(5) =41100a(6) =314736a(7) =108446352a(8) =1267665984a(9) =829171609920

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