A132685 - OEIS

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A132685

a(n) = C(2^n + 2*n, n).

1, 4, 28, 364, 10626, 850668, 218618940, 198773423848, 669741609663270, 8493008777332033900, 405943250253048290447028, 72938914603968404495709630360, 49143490709866058459392200362497820 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	FORMULA	`a(n) = [x^n] 1/(1-x)^(2^n + n + 1).`
	PROG	`(PARI) a(n)=binomial(2^n+2*n, n)`
	CROSSREFS	`Sequence in context: A165193 A095288 A155105 * A180966 A203032 A086812` `Adjacent sequences: A132682 A132683 A132684 * A132686 A132687 A132688`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Aug 26 2007`

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Last modified February 15 21:56 EST 2012. Contains 205860 sequences.