Permanent of an n X n square matrix M(n) formed by writing the numbers 1, ..., n^2 successively forward and backward along the rows in zig-zag pattern.

A322277

Permanent of an n X n square matrix M(n) formed by writing the numbers 1, ..., n^2 successively forward and backward along the rows in zig-zag pattern.

Terms

    a(0) =1a(1) =11a(2) =490a(3) =60916a(4) =15745548a(5) =7477647372

External references