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A132686 a(n) = C(2^n + 2*n + 1, n). 0
1, 5, 36, 455, 12650, 962598, 237093780, 209004408899, 689960224294614, 8639439963148103450, 409865407260324119340236, 73328394245057556170201283726, 49287010273876375495535472789937580 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

FORMULA

a(n) = [x^n] 1/(1-x)^(2^n + n + 2).

PROG

(PARI) a(n)=binomial(2^n+2*n+1, n)

CROSSREFS

Cf. A132685.

Sequence in context: A062024 A031971 A194958 * A118018 A156355 A002666

Adjacent sequences:  A132683 A132684 A132685 * A132687 A132688 A132689

KEYWORD

nonn

AUTHOR

Paul D. Hanna (pauldhanna(AT)juno.com), Aug 26 2007

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Last modified February 16 08:58 EST 2012. Contains 205902 sequences.