id:A139680 - OEIS Search Results

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Number of n X n symmetric binary matrices with no row sum greater than 4.

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1, 2, 8, 64, 1024, 28217, 1146419, 62951431, 4451407563, 392447922178, 42102440864054, 5391561047209898, 811314950514676762 (list; graph; listen)

	OFFSET	`0,2`
	CROSSREFS	`Sequence in context: A153534 A153563 A136283 this_sequence A153544 A153572 A153545` `Adjacent sequences: A139677 A139678 A139679 this_sequence A139681 A139682 A139683`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Jun 13 2008`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.