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A051790
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C(n)*(C(n)-1)*(C(n)-2)/6, where C(n) are the Catalan numbers (A000108).
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1
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0, 0, 0, 10, 364, 11480, 374660, 13067054, 486345860, 19143687420, 789566607180, 33856987804640, 1500056631216220, 68334193148209300, 3188209413930298680, 151869731557849844790, 7367151946247774981940, 363173327612427801849380
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,4
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FORMULA
| Binomial(binomial(2*n,n)/(n+1),3) - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), May 29 2006
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MAPLE
| [seq (binomial(binomial(2*n, n)/(n+1), 3), n=0..24)]; - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), May 29 2006
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CROSSREFS
| Cf. A000108.
Sequence in context: A185255 A112694 A079914 * A119547 A117797 A117312
Adjacent sequences: A051787 A051788 A051789 * A051791 A051792 A051793
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Dec 10 1999
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