A342599 Number of n X n 01-matrices with permanent 0 from which it is possible to obtain a 01-matrix with permanent 1 by increasing a single element by 1, up to permutation of rows and columns.
1, 3, 12, 74, 788, 16016, 658220, 55598924
Offset: 1
Extensions
a(8) from Max Alekseyev, Feb 10 2022