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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.

A140308 Number of n X n binary matrices containing no more than five 1s in any 3 X 3 sub-block.

Original entry on oeis.org

1, 2, 16, 382, 33940, 10537021, 10478502929, 36396596300106, 433087032815881242, 17394297682298725368562
Offset: 0

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Author

R. H. Hardin, May 27 2008

Keywords

Crossrefs

Cf. A139810.

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