A065424 - OEIS

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A065424

Catalan-like formula: a(n)=binomial(6m,3m+1)/(9m+6).

1, 33, 1326, 59432, 2851425, 143291610, 7446255180, 396893583792, 21579377870484, 1192183281903845, 66734212415276406, 3776778437640143208, 215744630060724034270, 12423227699242323077940 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	LINKS	`Vincenzo Librandi, Table of n, a(n) for n = 1..100`
	FORMULA	`G.f.: Asqrt((A+1)(1+9A)) where A=x(1+9A)^3(1+A) - Mark van Hoeij, Nov 16 2011`
	PROG	`(MAGMA) [Binomial(6n, 3n+1)/(9*n+6): n in [1..20]]; // Vincenzo Librandi, Nov 17 2011`
	CROSSREFS	`Cf. A000108, A065097.` `Sequence in context: A130835 A077420 A158688 * A071268 A012805 A093756` `Adjacent sequences: A065421 A065422 A065423 * A065425 A065426 A065427`
	KEYWORD	`nonn`
	AUTHOR	`Len Smiley (smiley(AT)math.uaa.alaska.edu), Nov 16 2001`

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Last modified February 17 07:30 EST 2012. Contains 205998 sequences.