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A038003
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Odd Catalan numbers.
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12
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1, 1, 5, 429, 9694845, 14544636039226909, 94295850558771979787935384946380125, 11311095732253345760960290897769189975961199415637572612957718759342193629
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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COMMENTS
| Also a(n-1) = C(2^n,2^(n-1))/(2^n - 1)/2 - Benoit Cloitre (benoit7848c(AT)orange.fr), Aug 17 2002
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LINKS
| David Wasserman (dwasserm(AT)earthlink.net), May 07 2007, Table of n, a(n) for n = 0..9
H-Y. Lin, Odd Catalan Numbers modulo 2^k, Integers 11 (2011) #A55
Eric Weisstein's World of Mathematics, Catalan Number
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FORMULA
| Binomial(2^(n+1)-2, 2^n-1)/(2^n).
a(n) = A000108(2^n-1). - David Wasserman (dwasserm(AT)earthlink.net), May 07 2007
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CROSSREFS
| Cf. A000108.
Cf. A094389.
Sequence in context: A201887 A147684 A199090 * A054332 A145247 A177026
Adjacent sequences: A038000 A038001 A038002 * A038004 A038005 A038006
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KEYWORD
| nonn
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AUTHOR
| Christian G. Bower (bowerc(AT)usa.net)
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