50459685390
domain: N
Appears in sequences
- Number of n X n matrices over symbol set {1,2,3} equivalent under any permutation of row, columns or the symbol set.at n=6A091060
- Number A(n,k) of inequivalent n X n matrices with entries from [k], where equivalence means permutations of rows or columns or the symbol set; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=51A242095