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A013974 Eisenstein series E_10(q) (alternate convention E_5(q)). 12
1, -264, -135432, -5196576, -69341448, -515625264, -2665843488, -10653352512, -35502821640, -102284205672, -264515760432, -622498190688, -1364917062432, -2799587834736, -5465169838656, -10149567696576, -18177444679944 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

REFERENCES

R. C. Gunning, Lectures on Modular Forms. Princeton Univ. Press, Princeton, NJ, 1962, p. 53.

N. Koblitz, Introduction to Elliptic Curves and Modular Forms, Springer-Verlag, 1984, see p. 111.

LINKS

T. D. Noe, Table of n, a(n) for n=0..1000

Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.

Index entries for sequences related to Eisenstein series

FORMULA

sum_{n=0...infinity} a(n)/exp(Pi)^(2n) = 0 or is very close to 0. - Gerald McGarvey (Gerald.McGarvey(AT)comcast.net), Jan 25 2005

G.f. is a period 1 Fourier series which satisfies f(-1 / t) = - (t/i)^10 * f(t) where q = exp(2 pi i t). - Michael Somos Dec 30 2008

EXAMPLE

1 - 264*q - 135432*q^2 - 5196576*q^3 - 69341448*q^4 - 515625264*q^5 + ...

MAPLE

E := proc(k) local n, t1; t1 := 1-(2*k/bernoulli(k))*add(sigma[k-1](n)*q^n, n=1..60); series(t1, q, 60); end; E(10);

PROG

(PARI) a(n)=if(n<1, n==0, -264*sigma(n, 9))

CROSSREFS

Cf. A008410.

Cf. A006352 (E_2), A004009 (E_4), A013973 (E_6), A008410 (E_8), A013974 (E_10), A029828 (E_12), A058550 (E_14), A029829 (E_16), A029830 (E_20), A029831 (E_24).

Convolution of A004009 and A013973.

Sequence in context: A035315 A168196 A107507 * A145639 A116501 A151602

Adjacent sequences:  A013971 A013972 A013973 * A013975 A013976 A013977

KEYWORD

sign

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 16 12:12 EST 2012. Contains 205908 sequences.