id:A140964 - OEIS Search Results

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Number of n X n symmetric binary matrices with each 1 adjacent to an odd number of other 1's.

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1

1, 1, 3, 10, 47, 331, 3767, 62520, 1518009, 55743394, 3088601538, 255245736384, 31478354074963, 5821763616950936, 1613533542340366588, 669043996295174916639, 415143729274794925159205 (list; graph; listen)

	OFFSET	`1,3`
	LINKS	`Ron Hardin (rhhardin(AT)att.net), Jul 27 2008, Table of n, a(n) for n = 1..21`
	CROSSREFS	`Sequence in context: A092429 A005651 A105748 this_sequence A005921 A143921 A082426` `Adjacent sequences: A140961 A140962 A140963 this_sequence A140965 A140966 A140967`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Jul 27 2008`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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