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A078658 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). 1
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; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

a(n) = number of cobordism classes in dimension n.

REFERENCES

Robert E. Stong, Notes on Cobordism Theory, Princeton Univ. Press, 1968.

LINKS

Table of n, a(n) for n=0..57.

CROSSREFS

Cf. A078657.

Sequence in context: A334677 A179080 A294199 * A307719 A185314 A285120

Adjacent sequences:  A078655 A078656 A078657 * A078659 A078660 A078661

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Dec 15 2002

STATUS

approved

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Last modified August 10 12:19 EDT 2020. Contains 336379 sequences. (Running on oeis4.)