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A008374 Number of orbits on points that are at n steps from 0 in D_9 lattice. 0
1, 1, 4, 8, 18, 33, 62, 104, 175, 277, 433, 651, 969 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..12.

J. H. Conway and N. J. A. Sloane, Low-Dimensional Lattices VII: Coordination Sequences, Proc. Royal Soc. London, A453 (1997), 2369-2389 (pdf).

CROSSREFS

Sequence in context: A008085 A001977 A008373 * A201686 A008240 A008375

Adjacent sequences:  A008371 A008372 A008373 * A008375 A008376 A008377

KEYWORD

nonn

AUTHOR

N. J. A. Sloane and J. H. Conway

STATUS

approved

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Last modified September 25 19:48 EDT 2017. Contains 292500 sequences.