id:A029863 - OEIS Search Results

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Expansion of Product_{k >= 1} 1/(1-x^k)^c(k), where c(1), c(2), ... = 2 3 2 3 2 3 2 3 ....

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1, 2, 6, 12, 27, 50, 98, 172, 310, 522, 888, 1444, 2357, 3724, 5882, 9072, 13957, 21082, 31732, 47072, 69545, 101540, 147620, 212516, 304631, 433054, 613030, 861616, 1206089, 1677766, 2324844, 3203748, 4398602, 6009390, 8181250 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Euler transform of period 2 sequence [2,3,...].`
	LINKS	`N. J. A. Sloane, Transforms`
	PROGRAM	`(PARI) a(n)=local(A); if(n<0, 0, A=x*O(x^n); polcoeff( 1/eta(x+A)^2/eta(x^2+A), n))`
	CROSSREFS	`Sequence in context: A054454 A084170 A052971 this_sequence A091919 A059078 A112510` `Adjacent sequences: A029860 A029861 A029862 this_sequence A029864 A029865 A029866`
	KEYWORD	`nonn`
	AUTHOR	`njas`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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