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.

A180761 Half the number of n X n binary arrays with each element equal to at least one neighbor.

Original entry on oeis.org

0, 3, 63, 4475, 1154119, 1064583557, 3538520414645, 42325704140613463, 1822180205677117048273, 282344956970612464702333909, 157459613671260527898784781898227
Offset: 1

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Author

R. H. Hardin Sep 20 2010

Keywords

Comments

Diagonal of A180771

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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