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A139682
Number of n X n symmetric binary matrices with no row sum greater than 6.
2
1, 2, 8, 64, 1024, 32768, 2097152, 254409765, 52635426489, 16734894319214, 7584366191600668, 4658699927786935270, 3743721825782942609558, 3832881704712490758507152, 4895883231714885655148797216, 7669344273849107780888127116263, 14522102432152504473007144076157867
OFFSET
0,2
LINKS
CROSSREFS
Column k=6 of A334548.
Sequence in context: A153576 A139681 A084282 * A139683 A139684 A139685
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 13 2008
STATUS
approved