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A035716
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Coordination sequence for 21-dimensional cubic lattice.
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0
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1, 42, 882, 12362, 130242, 1101450, 7796978, 47568618, 255582978, 1229718378, 5369283570, 21507034122, 79749022402, 275848947402, 895903147122, 2747597899690, 7996359740418, 22180063387818
(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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LINKS
| 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
| ((1+x)/(1-x))^21.
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CROSSREFS
| Sequence in context: A030020 A090969 A010958 * A161663 A162179 A162411
Adjacent sequences: A035713 A035714 A035715 * A035717 A035718 A035719
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KEYWORD
| nonn,easy
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AUTHOR
| Serra-Sagrista, Joan; jserra(AT)ccd.uab.es
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EXTENSIONS
| Recomputed Nov 25 1998 by N. J. A. Sloane (njas(AT)research.att.com).
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