id:A038535 - OEIS Search Results

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Numerators of coefficients of EllipticE/Pi.

+0
4

1, -1, -3, -5, -175, -441, -4851, -14157, -2760615, -8690825, -112285459, -370263621, -19870814327, -67607800225, -931331941875, -3241035157725, -2913690606794775, -10313859829588425, -147068001273760875, -527570807893408125, -30451387031607516975 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`a(n) = 2^(-2 w[n])binomial[2n, n]^2 (-1)^(2n)/(1-2n) with w[n]=A000120 = number of 1's in binary expansion of n`
	CROSSREFS	`Cf. A038533, A038534.` `a(n) divides A000891(n+1).` `Sequence in context: A164371 A108013 A087307 this_sequence A090953 A092947 A104996` `Adjacent sequences: A038532 A038533 A038534 this_sequence A038536 A038537 A038538`
	KEYWORD	`frac,sign`
	AUTHOR	`Wouter Meeussen (wouter.meeussen(AT)pandora.be), revised Jan 03 2001`

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Last modified November 22 20:51 EST 2009. Contains 167312 sequences.

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