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%I M0008 #17 Sep 25 2016 14:51:26
%S 0,0,0,2,0,0,0,0,0,4,0,0,0,0,0,4,0,0,0,2,0,4,0,0,0,4,0,2,0,0,0,4,0,4,
%T 0,0,0,4,0,4,0,0,0,2,0,4,0,0,0,4,0,8,0,0,0,4,0,4,0,0,0,4,0,8,0,0,0,6,
%U 0,8,0,0,0,0,0,6,0,0,0,4,0,8,0,0,0,4,0,4,0,0,0,4,0,12,0,0,0,4,0,12,0,0,0,0,0,8,0,0,0,8,0,12,0,0,0,4,0,8,0,0,0,4,0,8,0,0,0,4,0,12
%N Theta series of hexagonal close-packing with respect to edge between layers.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H Sean A. Irvine, <a href="/A005888/b005888.txt">Table of n, a(n) for n = 0..999</a>
%H N. J. A. Sloane and B. K. Teo, <a href="http://dx.doi.org/10.1063/1.449551">Theta series and magic numbers for close-packed spherical clusters</a>, J. Chem. Phys. 83 (1985) 6520-6534.
%F Expansion of theta2(q^(4/3)) * (theta2(q^2)*psi(3, q^6) + theta3(q^2)*psi(6, q^6)) in q^(1/6) where psi(k, q) = Sum_{m=-infinity..infinity} q^((m+1/k)^2) and theta2 and theta3 are Jacobi theta functions [From Sloane and Teo]. - _Sean A. Irvine_, Sep 25 2016
%K easy,nonn
%O 0,4
%A _N. J. A. Sloane_.
%E More terms from _Sean A. Irvine_, Sep 25 2016
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