A033769 - OEIS

A033769

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

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, 12, 2, 10, 15, 10, 13, 3, 12, 10, 15, 12, 2, 20, 13, 11, 17, 3, 14, 18, 14, 16, 1, 16, 15, 20, 15, 3, 21, 17, 18, 24, 3, 16, 28, 18, 17, 5, 20, 20, 30, 20, 4, 26

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OFFSET

0,4

COMMENTS

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

LINKS

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

CROSSREFS

Sequence in context: A214292 A212184 A371571 * A333636 A074660 A002125

Adjacent sequences: A033766 A033767 A033768 * A033770 A033771 A033772

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

EXTENSIONS

More terms from Seiichi Manyama, May 22 2017

STATUS

approved