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Search: id:A035716
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| A035716 |
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Coordination sequence for 21-dimensional cubic lattice. |
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+0
1
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| 1, 42, 882, 12362, 130242, 1101450, 7796978, 47568618, 255582978, 1229718378, 5369283570, 21507034122, 79749022402, 275848947402, 895903147122, 2747597899690, 7996359740418, 22180063387818
(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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LINKS
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J. H. Conway and N. J. A. Sloane, Low-Dimensional Lattices VII: Coordination Sequences, Proc. Royal Soc. London, A453 (1997), 2369-2389 (Abstract, pdf, ps).
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FORMULA
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((1+x)/(1-x))^21.
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CROSSREFS
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Sequence in context: A030020 A090969 A010958 this_sequence A010994 A004422 A020932
Adjacent sequences: A035713 A035714 A035715 this_sequence A035717 A035718 A035719
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KEYWORD
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nonn,easy
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AUTHOR
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Serra-Sagrista, Joan; jserra(AT)ccd.uab.es
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EXTENSIONS
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Recomputed Nov 25 1998 by N. J. A. Sloane (njas(AT)research.att.com).
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