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A035907
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Coordination sequence for diamond structure D^+_62. (Edges defined by l_1 norm = 1.)
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1
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1, 0, 7688, 0, 9856016, 0, 5062048280, 0, 1396398655520, 0, 240550579435048, 0, 28384206701341744, 0, 2442767874758677048, 0, 160471399637289209920, 0, 8330250379684809297480, 0, 351158641745705372415056, 0, 12288946413958177271442008, 0, 363592488333694299036293216, 0
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OFFSET
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0,3
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LINKS
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J. H. Conway and N. J. A. Sloane, Low-Dimensional Lattices VII: Coordination Sequences, Proc. Royal Soc. London, A453 (1997), 2369-2389 (pdf).
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MAPLE
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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=62.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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Joan Serra-Sagrista (jserra(AT)ccd.uab.es)
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EXTENSIONS
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STATUS
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approved
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