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A287248
Number of matchings in the n X n bishop graph.
3
1, 4, 84, 16900, 39932844, 1361720957184, 774585118899294568, 8454365006540284439239696, 1984702974673190711327564424138048, 11162924792761237570313905721795529333447744, 1649914801339506800304019030963996680128410488784164960, 6996584578812582654135225585307693014250183123864863361126056356416, 919794116459365136444247186352581193250325236478988411540394596132809895149151936
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
Table of n, a(n) for n=1..13.
Eric Weisstein's World of Mathematics, Bishop Graph
Eric Weisstein's World of Mathematics, Independent Edge Set
Eric Weisstein's World of Mathematics, Matching
FORMULA
a(n) = A286422(n) * A286423(n). - Andrew Howroyd, May 23 2017
CROSSREFS
Cf. A286422, A286423.
Sequence in context: A367522 A015018 A204245 * A225164 A229185 A360741
Adjacent sequences: A287245 A287246 A287247 * A287249 A287250 A287251
KEYWORD
nonn
AUTHOR
Eric W. Weisstein, May 22 2017
STATUS
approved

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Last modified October 21 06:37 EDT 2024. Contains 376969 sequences.
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