OFFSET
0,5
COMMENTS
The A15 packing is the union of 8 translates of the lattice 4Z^3 by the vectors (0,0,0), (2,2,2) and all cyclic shifts of (0, +-1, 2).
LINKS
Center for Computational Materials Science, Naval Research Laboratory (mehl(AT)dave.nrl.navy.mil), The A15 Structure
EXAMPLE
1 + 2*q^4 + 4*q^5 + 8*q^6 + 4*q^13 + 16*q^14 + 6*q^16 + 8*q^20 + 8*q^21 + 8*q^22 + ...
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Aug 27 2001
STATUS
approved