id:A078658 - OEIS Search Results

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a(0) = 1; for n>0, a(n) = 1 + coefficient of x^n in expansion of 1/Product_{ n >= 2, n not of the form 2^k-1 } (1-x^n).

+0
2

1, 1, 2, 1, 3, 2, 4, 2, 6, 4, 9, 6, 13, 10, 19, 15, 28, 24, 41, 36, 59, 55, 85, 81, 121, 119, 171, 172, 240, 247, 335, 348, 464, 490, 639, 681, 874, 941, 1190, 1289, 1610, 1756, 2168, 2375, 2904, 3197, 3873, 4276, 5141, 5693, 6796, 7541, 8945, 9946, 11730, 13058, 15322, 17078 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`a(n) = number of cobordism classes in dimension n.`
	REFERENCES	`Robert E. Stong, Notes on Cobordism Theory, Princeton Univ. Press, 1968.`
	CROSSREFS	`Cf. A078657.` `Sequence in context: A130722 A147541 A024162 this_sequence A051282 A052306 A046823` `Adjacent sequences: A078655 A078656 A078657 this_sequence A078659 A078660 A078661`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Dec 15 2002`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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