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A035474
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Coordination sequence for lattice D*_10 (with edges defined by l_1 norm = 1).
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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
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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REFERENCES
| 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
| 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=10.
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CROSSREFS
| Sequence in context: A126901 A008420 A045758 * A103261 A120796 A120787
Adjacent sequences: A035471 A035472 A035473 * A035475 A035476 A035477
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), J. Serra-Sagrista (jserra(AT)ccd.uab.es)
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