id:A139810 - OEIS Search Results

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Number of n X n binary matrices containing no 2 X 2 all-1s sub-block.

+0
10

1, 2, 15, 417, 42176, 15701273, 21418970801, 107224417436160, 1968910887183791359, 132633131268024896655873, 32775983842712963307230834176, 29712661745725058784174163778464369 (list; graph; listen)

	OFFSET	`0,2`
	LINKS	`Ron Hardin, Table of n, a(n) for n = 0..19`
	CROSSREFS	`Sequence in context: A071102 A060381 A145328 this_sequence A012943 A013059 A013098` `Adjacent sequences: A139807 A139808 A139809 this_sequence A139811 A139812 A139813`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), May 23 2008`

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Last modified December 17 13:29 EST 2009. Contains 170826 sequences.

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