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Search: id:A144187
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| A144187 |
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Denominators of series expansion of the egf of the Catalan numbers. |
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+0
2
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| 1, 1, 1, 6, 12, 20, 60, 1680, 4032, 181440, 907200, 2851200, 17107200, 62270208, 242161920, 29059430400, 232475443200, 1077840691200, 277159034880, 52660216627200, 283555012608000, 65501207912448000, 720513287036928000
(list; graph; listen)
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OFFSET
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0,4
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LINKS
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Eric Weisstein's World of Mathematics, Catalan Number
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EXAMPLE
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E^(2*x)*(BesselI[0, 2*x] - BesselI[1, 2*x]) = 1 + x + x^2 + (5*x^3)/6 + (7*x^4)/12 + ...
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MAPLE
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seq(denom(binomial(2*n, n)/(n+1)!), n=0..30); [From Vladeta Jovovic (vladeta(AT)eunet.yu), Dec 03 2008]
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CROSSREFS
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Cf. A144186.
Adjacent sequences: A144184 A144185 A144186 this_sequence A144188 A144189 A144190
Sequence in context: A117343 A028611 A141808 this_sequence A055458 A078472 A005694
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KEYWORD
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nonn,frac
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AUTHOR
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E. W. Weisstein (eric(AT)weisstein.com), Sep 13, 2008
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