Search: id:A035924
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%I A035924
%S A035924 1,18432,56635392,69653977088,45941752946688,18883048883742720,
%T A035924 5302106181975969792,1082317427128538560512,168008295568901851496448,
%U A035924 20520427348116269962201088,2025569927437217835574947840
%N A035924 Coordination sequence for diamond structure D^+_96. (Edges defined by 
               l_1 norm = 1.)
%D A035924 J. Serra-Sagrista, Enumeration of lattice points in l_1 norm, Information 
               Processing Letters, 76, no. 1-2 (2000), 39-44.
%H A035924 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>).
%p A035924 f := proc(m) local k,t1; t1 := 2^(n-1)*binomial((n+2*m)/2-1,n-1); if 
               m mod 2 = 0 then t1 := t1+add(2^k*binomial(n,k)*binomial(m-1,k-1),
               k=0..n); fi; t1; end; where n=96.
%Y A035924 Sequence in context: A023340 A145822 A071368 this_sequence A157738 A031817 
               A157740
%Y A035924 Adjacent sequences: A035921 A035922 A035923 this_sequence A035925 A035926 
               A035927
%K A035924 nonn
%O A035924 0,2
%A A035924 J. Serra-Sagrista (jserra(AT)ccd.uab.es) Recomputed by N. J. A. Sloane 
               (njas(AT)research.att.com) Nov 27 1998.

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