Search: id:A035600
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%I A035600
%S A035600 0,2,24,146,608,1970,5336,12642,27008,53154,97880,170610,284000,
%T A035600 454610,703640,1057730,1549824,2220098,3116952,4298066,5831520,
%U A035600 7796978,10286936,13408034,17282432,22049250,27866072,34910514
%N A035600 Number of points of L1 norm 6 in cubic lattice Z^n.
%D A035600 J. Serra-Sagrista, Enumeration of lattice points in l_1 norm, Information 
               Processing Letters, 76, no. 1-2 (2000), 39-44.
%H A035600 J. H. Conway and N. J. A. Sloane, Low-Dimensional Lattices VII: Coordination 
               Sequences, Proc. Royal Soc. London, A453 (1997), 2369-2389 (<a href="http:/
               /www.research.att.com/~njas/doc/ldl7.txt">Abstract</a>, <a href="http:/
               /www.research.att.com/~njas/doc/ldl7.pdf">pdf</a>, <a href="http:/
               /www.research.att.com/~njas/doc/ldl7.ps">ps</a>).
%F A035600 a(n)= ( 4*n^6 +40*n^4 +46*n^2 )/45. - frank.ellermann(AT)t-online.de, 
               Mar 16 2002
%p A035600 f := proc(d,m) local i; sum( 2^i*binomial(d,i)*binomial(m-1,i-1),i=1..min(d,
               m)); end; # n=dimension, m=norm
%Y A035600 Cf. A035596 - A035607.
%Y A035600 Sequence in context: A078994 A000185 A163752 this_sequence A013528 A108476 
               A157053
%Y A035600 Adjacent sequences: A035597 A035598 A035599 this_sequence A035601 A035602 
               A035603
%K A035600 nonn,easy
%O A035600 0,2
%A A035600 N. J. A. Sloane (njas(AT)research.att.com).

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