id:A082292 - OEIS Search Results

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(2n+1) * (2n)! / sqrt(4*(n+1)*prod(k=1...2n+1, lcm(k,2n+2-k))).

+0
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1, 1, 2, 12, 4, 8, 72, 160, 16, 3456, 32, 1792, 129600, 1024, 128, 1492992, 256, 2048000, 18289152, 180224, 1024, 573308928, 1280000, 1703936, 241864704, 719323136, 8192, 64497254400000, 16384, 33554432, 234125033472, 142606336 (list; graph; listen)

	OFFSET	`2,3`
	PROGRAM	`(PARI) for(i=2, 20, n=i2+1:p=1:for(k=1, n, p=plcm(k, n+1-k)):print1((2i+1)(2i)!/sqrtint(4(i+1)*p)", "))`
	CROSSREFS	`Cf. A082022.` `Sequence in context: A113698 A048794 A164869 this_sequence A164857 A066700 A159323` `Adjacent sequences: A082289 A082290 A082291 this_sequence A082293 A082294 A082295`
	KEYWORD	`nonn`
	AUTHOR	`Ralf Stephan (ralf(AT)ark.in-berlin.de), Apr 08 2003`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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