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Search: id:A035800
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| A035800 |
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Coordination sequence for lattice D*_30 (with edges defined by l_1 norm = 1). |
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+0
1
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| 1, 60, 1800, 36020, 541200, 6516012, 65520920, 566262180, 4296107040, 29081139740, 177923724072, 994286700180, 5119703270960, 24470719227660, 109262828065080, 458260342666116, 1814109445277760, 6807471232021500
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OFFSET
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0,2
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REFERENCES
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J. Serra-Sagrista, Enumeration of lattice points in l_1 norm, Information Processing Letters, 76, no. 1-2 (2000), 39-44.
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FORMULA
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a(m)=add(2^k*binomial(n, k)*binomial(m-1, k-1), k=0..n)+2^n*binomial((n+2*m)/2-1, n-1); with n=30.
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CROSSREFS
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Adjacent sequences: A035797 A035798 A035799 this_sequence A035801 A035802 A035803
Sequence in context: A053528 A017776 A035725 this_sequence A017723 A058836 A013925
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KEYWORD
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nonn
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AUTHOR
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njas, J. Serra-Sagrista (jserra(AT)ccd.uab.es)
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