OFFSET
0,2
COMMENTS
This is the trigonal R lattice (the even holotype) of dimension 3.
LINKS
John Cannon, Table of n, a(n) for n = 0..5000
G. Nebe and N. J. A. Sloane, Home page for this lattice
EXAMPLE
1 + 6*q^2 + 6*q^4 + 12*q^6 + 18*q^8 + 12*q^12 + 24*q^14 + 18*q^16 + 18*q^18 + ...
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved