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A005889 Theta series of hexagonal close-packing with respect to triangle between octahedra.
(Formerly M2203)
3

%I M2203

%S 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,

%T 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,

%U 0,24,18,0,36,3,0,12

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

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

%D 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.

%K nonn

%O 1,1

%A _N. J. A. Sloane_.

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Last modified February 19 20:17 EST 2019. Contains 320328 sequences. (Running on oeis4.)