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Search: id:A035799
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| A035799 |
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Coordination sequence for lattice D*_28 (with edges defined by l_1 norm = 1). |
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1
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| 1, 56, 1568, 29288, 410816, 4618712, 43381856, 350353928, 2485013888, 15734806136, 90102925472, 471579734696, 2275791199808, 10202437251608, 42760695613152, 168488556607560, 627208000027392, 2215487522023608
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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=28.
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CROSSREFS
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Sequence in context: A022081 A017772 A035723 this_sequence A017719 A050989 A140406
Adjacent sequences: A035796 A035797 A035798 this_sequence A035800 A035801 A035802
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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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