A003264 a(n) = floor((-4n)/Bernoulli(2n)).

0, -24, 240, -504, 480, -264, 94, -24, 4, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1

Offset

0,2

References

Douglas C. Ravenel, Complex cobordism theory for number theorists, Lecture Notes in Mathematics, 1326, Springer-Verlag, Berlin-New York, 1988, pp. 123-133.

F. Hirzebruch et al., Manifolds and Modular Forms, Vieweg, 2nd ed. 1994, p. 130.

Links

Table of n, a(n) for n=0..75.

Index entries for sequences related to Bernoulli numbers.

Mathematica

Table[Floor[(-4n)/BernoulliB[2n]], {n, 0, 75}] (* Alonso del Arte, Jul 19 2012 *)

Crossrefs

Sequence in context: A159506 A081863 A247825 * A003272 A003245 A006863

Adjacent sequences: A003261 A003262 A003263 * A003265 A003266 A003267

Keyword

sign

Author

N. J. A. Sloane

Status

approved