The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A289981

(Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A289981

Coefficients in expansion of 236364091*E_24/Delta^2 where Delta is the generating function of Ramanujan's tau function (A000594).
(history; published version)

#32 by Vaclav Kotesovec at Mon Apr 09 07:51:39 EDT 2018

STATUS

editing

approved

#31 by Vaclav Kotesovec at Mon Apr 09 07:51:32 EDT 2018

FORMULA

a(n) ~ 236364091 * exp(4*Pi*sqrt(2*n)) / (2^(1/4) * n^(3/4)). - Vaclav Kotesovec, Apr 09 2018

STATUS

approved

editing

#30 by Joerg Arndt at Thu Jul 20 02:01:15 EDT 2017

STATUS

proposed

approved

#29 by Seiichi Manyama at Thu Jul 20 01:48:28 EDT 2017

STATUS

editing

proposed

#28 by Seiichi Manyama at Thu Jul 20 01:48:17 EDT 2017

LINKS

Seiichi Manyama, <a href="/A289981/b289981.txt">Table of n, a(n) for n = -2..1000</a>

STATUS

approved

editing

#27 by N. J. A. Sloane at Wed Jul 19 20:22:48 EDT 2017

STATUS

proposed

approved

#26 by Seiichi Manyama at Tue Jul 18 00:16:17 EDT 2017

STATUS

editing

proposed

#25 by Seiichi Manyama at Tue Jul 18 00:15:52 EDT 2017

FORMULA

G.f.: (236364091 + 131040 * Sum_{n>=1} sigma_23(n)q^n )/(q^2 * Product_{n>=1} (1 - q^n)^48) where sigma_23(n) is A013971.

#24 by Seiichi Manyama at Tue Jul 18 00:14:54 EDT 2017

FORMULA

G.f.: (236364091 + 131040 * Sum_{n>=1} sigma_23(n)q^n )/(q^2 * Product_{n>=1} (1 - xq^n)^48) where sigma_23(in) is A013971.

#23 by Seiichi Manyama at Tue Jul 18 00:13:54 EDT 2017

FORMULA

G.f.: (236364091 + 131040 * Sum_{in>=1} sigma_23(in)q^i n )/(q^2 * Product_{n>=1} (1 - x^n)^48) where sigma_23(i) is A013971.