A005889 Theta series of hexagonal close-packing with respect to triangle between octahedra.

3, 0, 6, 3, 0, 6, 6, 0, 18, 0, 0, 6, 6, 0, 24, 3, 0, 6, 12, 0, 24, 6, 0, 6, 15, 0, 18, 6, 0, 12, 18, 0, 24, 6, 0, 18, 18, 0, 36, 0, 0, 0, 12, 0, 36, 12, 0, 6, 21, 0, 48, 6, 0, 18, 12, 0, 36, 0, 0, 24, 18, 0, 36, 3, 0, 12

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn

References

• N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Links

• N. J. A. Sloane and B. K. Teo, Theta series and magic numbers for close-packed spherical clusters, J. Chem. Phys. 83 (1985) 6520-6534.