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Search: id:A140786
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A140786 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 November 24 23:16 EST 2009. Contains 167481 sequences.

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