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A162056 Number of n X n symmetric binary arrays with rows, considered as graycode numbers, in nondecreasing order 1
2, 6, 18, 100, 794, 11268, 264083, 11030649, 813916625, 108554870990, 26200578482080, 11534899965771737, 9306038519940583539, 13836478621233487213306, 38099883187974152891055420 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
CROSSREFS
Sequence in context: A162062 A162063 A162064 * A347727 A308549 A212653
KEYWORD
nonn
AUTHOR
R. H. Hardin Jun 25 2009
STATUS
approved

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Last modified May 22 19:06 EDT 2024. Contains 372758 sequences. (Running on oeis4.)