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G.f. = Phi^6, where Phi = g.f. for A028930.
1

%I #6 Oct 19 2019 18:12:54

%S 1,0,12,12,72,120,352,600,1392,2212,4272,6480,10868,15396,23784,31712,

%T 45708,59184,81172,101928,136752,167864,218712,266112,339364,403680,

%U 509664,597060,736416,856236,1043032,1186860,1438416,1627216,1935936,2181840

%N G.f. = Phi^6, where Phi = g.f. for A028930.

%D Köklüce, Bülent. "Cusp forms in S_6 (Gamma_ 0(23)), S_8 (Gamma_0 (23)) and the number of representations of numbers by some quadratic forms in 12 and 16 variables." The Ramanujan Journal 34.2 (2014): 187-208. See Phi_k, p. 188, also p. 196. (A028930 is Phi_1.)

%H Alois P. Heinz, <a href="/A328531/b328531.txt">Table of n, a(n) for n = 0..5000</a>

%Y Cf. A028930.

%K nonn

%O 0,3

%A _N. J. A. Sloane_, Oct 18 2019