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A033769 Product t2(q^d); d | 10, where t2 = theta2(q)/(2*q^(1/4)). 1

%I #12 May 29 2017 09:11:51

%S 1,1,1,2,0,2,3,2,3,1,3,3,5,4,1,6,5,7,7,1,6,8,7,6,2,6,6,11,8,0,11,11,8,

%T 12,2,10,15,10,13,3,12,10,15,12,2,20,13,11,17,3,14,18,14,16,1,16,15,

%U 20,15,3,21,17,18,24,3,16,28,18,17,5,20,20,30,20,4,26

%N Product t2(q^d); d | 10, where t2 = theta2(q)/(2*q^(1/4)).

%C Also the number of positive odd solutions to equation a^2 + 2*b^2 + 5*c^2 + 10*d^2 = 8*n + 18. - _Seiichi Manyama_, May 29 2017

%H Seiichi Manyama, <a href="/A033769/b033769.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 April 23 05:20 EDT 2024. Contains 371906 sequences. (Running on oeis4.)