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A033771 Product t2(q^d); d | 12, where t2 = theta2(q)/(2*q^(1/4)). 1

%I

%S 1,1,1,3,2,3,6,5,4,9,9,6,15,12,9,21,19,12,26,24,18,39,31,24,46,41,28,

%T 57,47,30,72,54,38,84,65,48,95,73,53,108,84,63,134,101,68,147,112,78,

%U 173,123,90,189,149,102,196,167,114,225,168,114,251,209,134,282,206

%N Product t2(q^d); d | 12, where t2 = theta2(q)/(2*q^(1/4)).

%C Also the number of positive odd solutions to equation a^2 + 2*b^2 + 3*c^2 + 4*d^2 + 6*e^2 + 12*f^2 = 8*n + 28. - _Seiichi Manyama_, May 29 2017

%H Seiichi Manyama, <a href="/A033771/b033771.txt">Table of n, a(n) for n = 0..10000</a>

%K nonn

%O 0,4

%A _N. J. A. Sloane_

%E More terms from _Seiichi Manyama_, May 22 2017

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Last modified July 13 04:01 EDT 2020. Contains 335673 sequences. (Running on oeis4.)