A033774 Product t2(q^d); d | 15, where t2 = theta2(q)/(2*q^(1/4)).

1, 1, 0, 2, 1, 1, 3, 0, 2, 3, 2, 2, 1, 1, 2, 6, 2, 1, 7, 4, 3, 7, 0, 4, 10, 4, 4, 2, 4, 5, 10, 4, 1, 13, 6, 4, 12, 1, 4, 14, 5, 4, 3, 6, 5, 15, 8, 0, 16, 6, 8, 20, 2, 8, 18, 8, 8, 3, 8, 8, 25, 9, 2, 20, 7, 10, 21, 2, 10, 25, 8, 12, 1, 12, 12, 24, 10, 1, 30, 8, 9, 28

Offset

0,4

Comments

Also the number of positive odd solutions to equation a^2 + 3*b^2 + 5*c^2 + 15*d^2 = 8*n + 24. - Seiichi Manyama, May 29 2017

Links

Seiichi Manyama, Table of n, a(n) for n = 0..10000

Crossrefs

Sequence in context: A299235 A341259 A245840 * A033804 A103910 A155993

Adjacent sequences: A033771 A033772 A033773 * A033775 A033776 A033777

Keyword

nonn

Author

N. J. A. Sloane

Extensions

More terms from Seiichi Manyama, May 23 2017

Status

approved