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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 (list; graph; refs; listen; history; text; internal format)
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.

LINKS

T. D. Noe, Table of n, a(n) for n = 1..100

R. C. Read, On general dissections of a polygon, Preprint (1974)

Index entries for sequences related to Bernoulli numbers.

MATHEMATICA

Table[Ceiling[BernoulliB[2n]/(-4n)], {n, 24}] (* Alonso del Arte, Jul 11 2012 *)

CROSSREFS

Cf. A003414 (floor instead of ceiling).

Sequence in context: A121034 A125402 A016290 * A263822 A016241 A306558

Adjacent sequences:  A003454 A003455 A003456 * A003458 A003459 A003460

KEYWORD

sign

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified August 26 05:23 EDT 2019. Contains 326328 sequences. (Running on oeis4.)