A008373 Number of orbits on points that are at n steps from 0 in D_8 lattice.

1, 1, 4, 8, 18, 32, 59, 97, 160, 248, 380, 560, 816

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: A009918 A008085 A001977 * A008374 A201686 A008240

Adjacent sequences: A008370 A008371 A008372 * A008374 A008375 A008376

Keyword

nonn

Author

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

Status

approved