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A140786
Number of n X n symmetric binary matrices with no more than one greater count of 1's than 0's in and to the left of any position.
0
1, 2, 5, 30, 230, 4600, 118735, 8311450, 756803538, 190714491576, 62835570762274, 58060067384341176, 70381397432713019444, 241548955989071082731808, 1090217292455289464608212443, 14031096553899575409507694141410
OFFSET
0,2
CROSSREFS
Sequence in context: A019027 A019031 A366455 * A369726 A129951 A127298
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 13 2008
STATUS
approved