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.

A140309 Number of n X n binary matrices containing no more than six 1s in any 3 X 3 sub-block.

Original entry on oeis.org

1, 2, 16, 466, 51512, 21425198, 32840182186, 188637643581570, 4048457379398984078, 323937479341259299455434, 96758393657902322435446080112
Offset: 0

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Author

R. H. Hardin, May 27 2008

Keywords

Crossrefs

Cf. A139810.

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

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