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Search: id:A035797
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| A035797 |
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Coordination sequence for lattice D*_24 (with edges defined by l_1 norm = 1). |
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1
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| 1, 48, 1152, 18448, 221952, 2141808, 17282432, 120037968, 733189632, 4003707568, 19804348032, 89694733968, 375299336448, 1461956877552, 5337746984832, 18374985313488, 59954658388992, 186275979152688
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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=24.
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CROSSREFS
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Sequence in context: A022077 A010964 A035719 this_sequence A011000 A025233 A004425
Adjacent sequences: A035794 A035795 A035796 this_sequence A035798 A035799 A035800
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), J. Serra-Sagrista (jserra(AT)ccd.uab.es)
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