[seqfan] Re: computation for D4 lattice (A117216)

Joerg Arndt arndt at jjj.de
Thu Feb 4 14:16:06 CET 2010


* Richard Mathar <mathar at strw.leidenuniv.nl> [Feb 04. 2010 14:10]:
> 
> In reply to http://list.seqfan.eu/pipermail/seqfan/2010-February/003584.html :
> 
> This confirms a correction already submitted:
> 
> > Return-Path: <oeis at oeis.org>
> > Date: Wed, 3 Feb 2010 13:42:14 -0500
> > From: oeis at oeis.org
> > Cc: mathar at strw.leidenuniv.nl
> > Subject: COMMENT FROM submitA R. J. Mathar A117216
> > 
> > This copy is just for your records.  No reply is expected.
> >  
> > %S A117216 1,40,272,888,2080,4040,6960,11032,16448,23400,32080,42680,55392,70408,
> > %T A117216 87920,108120

Thanks.   re-check:
% time gp < lattice-D4.gp
20
[1, 40, 272, 888, 2080, 4040, 6960, 11032, 16448, 23400, 32080, 42680, 55392, 70408,
 87920, 108120, 131200, 157352, 186768, 219640, 256160]
gp -q -s 256M < lattice-D4.gp  10.93s user 0.03s system 99% cpu 11.002 total

I can compute more terms if required (using C).

> [...]





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