id:A075225 - OEIS Search Results

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Expansion of 2-AGM(1,1-8x) (where AGM denotes the arithmetic-geometric mean).

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1, 4, 4, 16, 84, 496, 3120, 20416, 137300, 942384, 6572336, 46432960, 331580272, 2389352256, 17351364160, 126851634432, 932823545428, 6895102385072, 51199649648048, 381738099675840, 2856639909232112, 21447771308542784 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`G.f.: 2-AGM(1, 1-8x).`
	PROGRAM	`(PARI) a(n)=if(n<0, 0, polcoeff(2-agm(1, 1-8x+xO(x^n)), n))`
	CROSSREFS	`Cf. A060691. a(n)=-A060691(n) if n>0.` `Sequence in context: A038788 A010099 A060691 this_sequence A091541 A094354 A019013` `Adjacent sequences: A075222 A075223 A075224 this_sequence A075226 A075227 A075228`
	KEYWORD	`nonn`
	AUTHOR	`Michael Somos, Sep 11 2002`

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.

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