A033768 Product t2(q^d); d | 9, where t2 = theta2(q)/(2*q^(1/4)).

1, 1, 0, 2, 1, 0, 2, 0, 0, 3, 3, 0, 3, 2, 0, 4, 0, 0, 4, 4, 0, 3, 1, 0, 5, 0, 0, 3, 5, 0, 6, 3, 0, 7, 0, 0, 4, 5, 0, 5, 4, 0, 4, 0, 0, 8, 5, 0, 6, 1, 0, 5, 0, 0, 7, 7, 0, 6, 5, 0, 7, 0, 0, 8, 7, 0, 7, 4, 0, 5, 0, 0, 8, 9, 0, 10, 0, 0, 9, 0, 0, 4, 7, 0, 7, 6, 0, 7

Offset

0,4

Comments

Also the number of positive odd solutions to equation a^2 + 3*b^2 + 9*c^2 = 8*n + 13. - Seiichi Manyama, May 29 2017

Links

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

Crossrefs

Sequence in context: A129449 A033798 A033792 * A033786 A366768 A137696

Adjacent sequences: A033765 A033766 A033767 * A033769 A033770 A033771

Keyword

nonn

Author

N. J. A. Sloane

Extensions

More terms from Seiichi Manyama, May 22 2017

Status

approved