A132689 - OEIS

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A132689

a(n) = C(2^n + 3*n + 1, n).

1, 6, 55, 816, 23751, 1712304, 377447148, 294109729200, 871896500955975, 10061777828754031380, 451004941990890693018405, 77739225019650285306412710240, 51039474754930845750609669420261300 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	FORMULA	`a(n) = [x^n] 1/(1-x)^(2^n + 2*n + 2).`
	PROG	`(PARI) a(n)=binomial(2^n+3*n+1, n)`
	CROSSREFS	`Cf. A132687, A132688.` `Sequence in context: A006200 A151345 A095652 * A183594 A140790 A137033` `Adjacent sequences: A132686 A132687 A132688 * A132690 A132691 A132692`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Aug 26 2007`

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Last modified February 17 11:46 EST 2012. Contains 206011 sequences.