id:A066806 - OEIS Search Results

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Product_{k=1..infinity} (1+x^k)^A001055(k).

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1, 1, 1, 2, 3, 4, 6, 8, 11, 16, 21, 27, 38, 49, 63, 84, 109, 138, 180, 228, 289, 369, 463, 578, 732, 911, 1128, 1407, 1741, 2140, 2646, 3243, 3968, 4862, 5925, 7198, 8770, 10620, 12833, 15524, 18718, 22502, 27075, 32467, 38873, 46537, 55565, 66220 (list; graph; listen)

	OFFSET	`0,4`
	FORMULA	`a(n)=1/nSum_{k=1..n} a(n-k)b(k), n>0, a(0)=1, b(k)=Sum_{d\|k} (-1)^(n/d+1)dA001055(d).`
	CROSSREFS	`Cf. A000041, A001055, A066739, A057567.` `Sequence in context: A003411 A034081 A064660 this_sequence A057048 A017911 A054782` `Adjacent sequences: A066803 A066804 A066805 this_sequence A066807 A066808 A066809`
	KEYWORD	`nonn`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)Eunet.yu), Jan 19 2002`

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Last modified September 7 12:28 EDT 2008. Contains 143483 sequences.

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