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A003457
a(n) = ceiling(Bernoulli(2n)/(-4n)).
1
0, 1, 0, 1, 0, 1, 0, 1, -1, 14, -140, 1804, -27413, 487469, -10026347, 236192434, -6317862397, 190439655627, -6425425249652, 241207241774251, -10020155328258126, 458387180159766539, -22989944171828251745, 1259023596072554784855, -75008667460769643668557
OFFSET
1,10
REFERENCES
F. Hirzebruch et al., Manifolds and Modular Forms, Vieweg, 2nd ed. 1994, p. 130.
Douglas C. Ravenel, Complex cobordism theory for number theorists, Lecture Notes in Mathematics, 1326, Springer-Verlag, Berlin-New York, 1988, pp. 123-133.
MATHEMATICA
Table[Ceiling[BernoulliB[2n]/(-4n)], {n, 24}] (* Alonso del Arte, Jul 11 2012 *)
CROSSREFS
Cf. A003414 (floor instead of ceiling).
Sequence in context: A377200 A125402 A016290 * A263822 A016241 A306558
KEYWORD
sign
STATUS
approved