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%I #11 Oct 09 2016 09:34:16
%S 1,1,4,8,18,33,62,104,175,277,433,651,969
%N Number of orbits on points that are at n steps from 0 in D_9 lattice.
%H J. H. Conway and N. J. A. Sloane, Low-Dimensional Lattices VII: Coordination Sequences, Proc. Royal Soc. London, A453 (1997), 2369-2389 (<a href="http://neilsloane.com/doc/Me220.pdf">pdf</a>).
%K nonn
%O 0,3
%A _N. J. A. Sloane_ and _J. H. Conway_
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