The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A001942 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A001942

Expansion of reciprocal of theta series of Leech lattice.
(history; published version)

#15 by Susanna Cuyler at Thu Oct 18 08:51:12 EDT 2018

STATUS

reviewed

approved

#14 by Michel Marcus at Thu Oct 18 07:27:42 EDT 2018

STATUS

proposed

reviewed

#13 by Seiichi Manyama at Thu Oct 18 06:40:25 EDT 2018

STATUS

editing

proposed

#12 by Seiichi Manyama at Thu Oct 18 06:40:21 EDT 2018

LINKS

Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/LeechLattice.html">Leech Lattice.</a>

#11 by Seiichi Manyama at Thu Oct 18 06:39:37 EDT 2018

LINKS

Seiichi Manyama, <a href="/A001942/b001942.txt">Table of n, a(n) for n = 0..376</a>

AUTHOR

N. J. A. Sloane.

STATUS

approved

editing

#10 by Bruno Berselli at Fri Jul 07 07:36:26 EDT 2017

STATUS

proposed

approved

#9 by Jean-François Alcover at Fri Jul 07 06:27:15 EDT 2017

STATUS

editing

proposed

#8 by Jean-François Alcover at Fri Jul 07 06:27:10 EDT 2017

MATHEMATICA

terms = 12; f[q_] = LatticeData["Leech", "ThetaSeriesFunction"][-I Log[q]/Pi]; s = Series[1/f[q], {q, 0, 2 terms}]; CoefficientList[s, q^2][[1 ;; terms]] // Round (* Jean-François Alcover, Jul 07 2017 *)

STATUS

approved

editing

#7 by Russ Cox at Fri Mar 30 16:43:16 EDT 2012

AUTHOR

_N. J. A. Sloane (njas(AT)research.att.com)_.

Discussion

Fri Mar 30

16:43

OEIS Server: https://oeis.org/edit/global/110

#6 by N. J. A. Sloane at Wed Oct 20 03:00:00 EDT 2010

LINKS

G. Nebe and N. J. A. Sloane, <a href="http://www.math.rwth-aachen.de/~Gabriele.Nebe/LATTICES/Leech.html">Home page for lattice</a>

KEYWORD

sign,new

sign