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A050476
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C(n)*(6n+1) where C(n)=Catalan numbers (A000108).
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0
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1, 7, 26, 95, 350, 1302, 4884, 18447, 70070, 267410, 1024556, 3938662, 15184876, 58689100, 227327400, 882230895, 3429693990, 13353413370, 52062618300, 203235266850, 794258570820
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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REFERENCES
| A. H. Beiler, Recreations in the Theory of Numbers, Dover, N.Y., 1964, pp. 194-196.
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MATHEMATICA
| Table[CatalanNumber[n](6n+1), {n, 0, 20}] (* From Harvey P. Dale, Nov 05 2011 *)
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CROSSREFS
| Cf. A016861, A000108 and A051945.
Sequence in context: A027937 A135026 A027138 * A026617 A026683 A197053
Adjacent sequences: A050473 A050474 A050475 * A050477 A050478 A050479
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KEYWORD
| easy,nonn
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AUTHOR
| Barry E. Williams, Dec 24 1999
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