%I #16 May 31 2022 14:55:13
%S 1,6,12,8,6,24,24,2,24,54,40,36,56,72,48,24,66,96,84,40,72,144,24,12,
%T 120,102,120,80,98,132,72,64,84,240,160,48,198,180,120,72,136,240,240,
%U 84,84,312,120,96,248,246,180,96,216,228,240,80,156,360,216,120,168
%N Number of integer solutions to a^2 + b^2 + c^2 + 7*d^2 = n.
%H Seiichi Manyama, <a href="/A236932/b236932.txt">Table of n, a(n) for n = 0..10000</a>
%F G.f.: theta_3(q)^3*theta_3(q^7), where theta_3() is the Jacobi theta function. - _Ilya Gutkovskiy_, Aug 01 2018
%p See A236924.
%Y For number of solutions to a^2 + b^2 + c^2 + k*d^2 = n for k = 1, 2, 3, 4, 5, 6, 7, 8, 12 see A000118, A236928, A236926, A236923, A236930, A236931, A236932, A236927, A236933.
%K nonn
%O 0,2
%A _N. J. A. Sloane_, Feb 16 2014