id:A038159 - OEIS Search Results

Search: id:A038159

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a(n) = n*a(n-1) + 1, a(0) = 2.

+0
3

2, 3, 7, 22, 89, 446, 2677, 18740, 149921, 1349290, 13492901, 148421912, 1781062945, 23153818286, 324153456005, 4862301840076, 77796829441217, 1322546100500690, 23805829809012421, 452310766371236000, 9046215327424720001, 189970521875919120022 (list; graph; listen)

	OFFSET	`0,1`
	FORMULA	`n!*(1+Sum(1/k!, k=0..n)).` `E.g.f.: (1+exp(x))/(1-x).`
	CROSSREFS	`A038159(n) = A000522(n) + n!.` `A033540(n+1) + 1.` `Sequence in context: A010738 A114599 A094062 this_sequence A077210 A072214 A007660` `Adjacent sequences: A038156 A038157 A038158 this_sequence A038160 A038161 A038162`
	KEYWORD	`nonn`
	AUTHOR	`njas`
	EXTENSIONS	`Comments from Michael Somos`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research