Number of n X n matrices over symbol set {1,2} equivalent under any permutation of row, columns or the symbol set.

A091059

Number of n X n matrices over symbol set {1,2} equivalent under any permutation of row, columns or the symbol set.

Terms

    a(0) =1a(1) =1a(2) =5a(3) =18a(4) =173a(5) =2812a(6) =126446a(7) =16821330a(8) =7343033248

External references