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Search: id:A035803
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| A035803 |
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Coordination sequence for lattice D*_36 (with edges defined by l_1 norm = 1). |
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1
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| 1, 72, 2592, 62232, 1121472, 16186536, 194986080, 2017132920, 18300435840, 147972367880, 1080041397408, 7190430174936, 44042615547456, 250012542410856, 1323529602867936, 6569619630522168, 30721376739859200
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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=36.
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CROSSREFS
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Sequence in context: A035118 A017788 A035731 this_sequence A017735 A004366 A004389
Adjacent sequences: A035800 A035801 A035802 this_sequence A035804 A035805 A035806
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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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