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Search: id:A035825
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| A035825 |
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Coordination sequence for lattice D*_80 (with edges defined by l_1 norm = 1). |
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+0
1
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| 1, 160, 12800, 682720, 27315200, 874496032, 23338104320, 534067024480, 10698844067840, 190617057780640, 3058431999744512, 44642243043558880, 597778600580572160, 7395049289720822560, 85027230683021319680
(list; graph; listen)
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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=80.
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CROSSREFS
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Adjacent sequences: A035822 A035823 A035824 this_sequence A035826 A035827 A035828
Sequence in context: A013446 A013444 A013448 this_sequence A091550 A027553 A025350
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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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