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Search: id:A045758
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| A045758 |
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Coordination sequence for 10-dimensional D^* lattice (dual of D). |
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+0
1
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| 1, 20, 200, 1340, 6800, 29028, 108120, 355980, 1047840, 2793140, 6830056, 15502300, 32993200, 66410500, 127335800, 233975084, 414071360, 708767060, 1177632520, 1905107580, 3008636112, 4648808100, 7041860760
(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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[ sum_{i=1}^{min(10, n)} 2^i * C(10, i) * C(n-1, i-1) ] + [ 2^10 * C((((10+2n)/2)-1), 10-1) ]
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CROSSREFS
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Sequence in context: A126901 A008420 A035474 this_sequence A103261 A120796 A120787
Adjacent sequences: A045755 A045756 A045757 this_sequence A045759 A045760 A045761
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KEYWORD
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easy,nonn
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AUTHOR
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Joan Serra-Sagrista (jserra(AT)ccd.uab.es)
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