A009153 - OEIS

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A009153

Expansion of cosh(sinh(x).exp(x)).

1, 0, 1, 6, 29, 140, 757, 4858, 36409, 302520, 2681769, 25018510, 245905365, 2559272196, 28264854685, 330408571202, 4065526003313, 52349977261040, 702393407898705, 9795673312888214, 141820637175889805 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	FORMULA	`a(n) = Sum_{k=0..n} Stirling2(n, k)(1+(-1)^k)/22^(n-k). - Vladeta Jovovic (vladeta(AT)eunet.rs), Sep 26 2003`
	MATHEMATICA	`Cosh[ Sinh[ x ]*Exp[ x ] ]`
	CROSSREFS	`Cf. A009599, A065143.` `Sequence in context: A026884 A110311 A030221 * A012325 A125785 A186651` `Adjacent sequences: A009150 A009151 A009152 * A009154 A009155 A009156`
	KEYWORD	`nonn,easy`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended and signs tested Mar 15 1997 by Olivier Gerard.`

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Last modified February 17 00:09 EST 2012. Contains 205978 sequences.