cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A342598 Number of n X n 01-matrices with zero permanent from which it is possible to obtain a 01-matrix with permanent 1 by increasing a single element by 1.

Original entry on oeis.org

1, 8, 216, 19584, 5542200, 4551802560, 10225942680240, 60077099766620160
Offset: 1

Views

Author

Max Alekseyev, Mar 16 2021

Keywords

Comments

a(n) <= n * A089482(n).

Crossrefs

Cf. A089482, A003024, A342599.

Extensions

a(8) from Max Alekseyev, Feb 10 2022
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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