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A162076
Number of n X n symmetric binary arrays with rows, considered as graycode numbers, in nondecreasing order, and an odd number of ones in each row
0
1, 1, 4, 8, 40, 226, 2579, 49498, 1765630, 113965238, 13490574157, 2926835209126, 1169086294542192, 862917161990013829, 1181920894330563626871
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
LINKS
Table of n, a(n) for n=1..15.
CROSSREFS
Sequence in context: A009335 A303566 A165622 * A137047 A137052 A111411
Adjacent sequences: A162073 A162074 A162075 * A162077 A162078 A162079
KEYWORD
nonn
AUTHOR
R. H. Hardin Jun 25 2009
STATUS
approved

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Last modified March 2 05:25 EST 2025. Contains 381316 sequences.
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