id:A140786 - OEIS Search Results

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Number of n X n symmetric binary matrices with no more than one greater count of 1s than 0s in and to the left of any position.

+0
1

1, 2, 5, 30, 230, 4600, 118735, 8311450, 756803538, 190714491576, 62835570762274, 58060067384341176, 70381397432713019444, 241548955989071082731808, 1090217292455289464608212443, 14031096553899575409507694141410 (list; graph; listen)

	OFFSET	`0,2`
	CROSSREFS	`Sequence in context: A163800 A019027 A019031 this_sequence A129951 A127298 A000133` `Adjacent sequences: A140783 A140784 A140785 this_sequence A140787 A140788 A140789`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Jul 13 2008`

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

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