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Search: id:A035477
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| A035477 |
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Coordination sequence for lattice D*_16 (with edges defined by l_1 norm = 1). |
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1
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| 1, 32, 512, 5472, 44032, 285088, 1549824, 7288544, 30382080, 114509600, 396241408, 1273082976, 3829072896, 10848180384, 29093973504, 74178420192, 180482027520, 420523089440, 941348409856, 2030565262176
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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=16.
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CROSSREFS
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Adjacent sequences: A035474 A035475 A035476 this_sequence A035478 A035479 A035480
Sequence in context: A022627 A116003 A035711 this_sequence A109384 A125489 A084486
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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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