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

1,2

Links

Table of n, a(n) for n=1..8.

Crossrefs

Cf. A089482, A003024, A342598.

Sequence in context: A104028 A074510 A317184 * A291951 A176408 A238630

Adjacent sequences: A342596 A342597 A342598 * A342600 A342601 A342602

Keyword

nonn,more,hard

Author

Max Alekseyev, Mar 16 2021

Extensions

a(8) from Max Alekseyev, Feb 10 2022

Status

approved