A091138 - OEIS

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A091138

E.g.f. A(x) satisfies A(A(x)) = x/(1-x)^2.

1, 2, 3, 6, 15, 0, 315, 1890, -82215, 708750, 41008275, -1385549550, -33403344975, 3426898600125, 26529571443375, -13516476003780750, 157765729690193625, 84230651703487038750, -3280917943856839411125, -799561865724400084556250, 62859004972802312944044375 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	COMMENTS	`First non-integer term is a(30) = 16103946844555056574100466078211185438823359375/2.`
	LINKS	`R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 28 2007, Table of n, a(n) for n = 1..28`
	FORMULA	`a(n) = n!* A030274(n)/A030275(n).`
	CROSSREFS	`Sequence in context: A091285 A109459 A118986 * A090983 A198684 A066653` `Adjacent sequences: A091135 A091136 A091137 * A091139 A091140 A091141`
	KEYWORD	`easy,frac,fini,sign`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)eunet.rs), Dec 20 2003`
	EXTENSIONS	`More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 28 2007`

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Last modified February 15 19:15 EST 2012. Contains 205852 sequences.