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A033767 Product t2(q^d); d | 8, where t2 = theta2(q)/(2*q^(1/4)). 1

%I #12 May 29 2017 09:12:17

%S 1,1,1,2,1,2,3,3,2,3,4,3,6,5,5,7,5,5,6,4,8,8,5,6,10,9,7,13,6,9,13,9,9,

%T 13,12,13,12,8,12,13,14,12,17,11,11,18,12,13,19,13,15,19,16,16,21,20,

%U 14,22,15,14,29,17,15,24,18,20,23,18,20,33,23,21,23,18

%N Product t2(q^d); d | 8, where t2 = theta2(q)/(2*q^(1/4)).

%C Also the number of positive odd solutions to equation a^2 + 2*b^2 + 4*c^2 + 8*d^2 = 8*n + 15. - _Seiichi Manyama_, May 29 2017

%H Seiichi Manyama, <a href="/A033767/b033767.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 25 09:07 EDT 2024. Contains 371964 sequences. (Running on oeis4.)