A068112 - OEIS

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A068112

Denominator of coefficient of (-x^2)^n in F(x)*F(-x) where F(x)=sum(k>=0,x^k/(k!)^3).

1, 4, 768, 1555200, 20808990720, 9029615616000000, 1415988202438656000000, 536259842454308939366400000, 7188611938994779905746534400000000, 503281313253202450261043834781696000000 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	REFERENCES	`Bruce Berndt, Ramanujan's Notebooks Part II, Springer-Verlag; see Hypergeometric series, p. 62.`
	FORMULA	`F(x)F(-x)=sum(n>=0, (3n)!/(n!)^3/((2n)!)^3(-x^2)^n)`
	CROSSREFS	`Cf. A068113.` `Sequence in context: A128846 A195625 A181200 * A007725 A102195 A114766` `Adjacent sequences: A068109 A068110 A068111 * A068113 A068114 A068115`
	KEYWORD	`easy,frac,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Mar 21 2002`

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Last modified February 15 15:20 EST 2012. Contains 205823 sequences.