id:A068102 - OEIS Search Results

Search: id:A068102

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a(n)=n!*2^n*sum(i=1,n,1/i/2^i).

+0
3

1, 5, 32, 262, 2644, 31848, 446592, 7150512, 128749536, 2575353600, 56661408000, 1359913708800, 35358235430400, 990036819072000, 29701191750451200, 950439443688806400, 32314962008209305600, 1163338987982963097600 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`E.g.f.: -ln(1-x)/(1-2x). - Vladeta Jovovic (vladeta(AT)eunet.rs), Feb 07 2003` `a(0)=0, a(n+1)=2(n+1)*a(n)+n! [From Jaume Oliver Lafont (joliverlafont(AT)gmail.com), Sep 15 2009]`
	CROSSREFS	`Cf. A000254, A069015.` `Sequence in context: A053157 A102231 A127089 this_sequence A001923 A023880 A104031` `Adjacent sequences: A068099 A068100 A068101 this_sequence A068103 A068104 A068105`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 14 2002`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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