0,4

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

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

Sequence in context: A285721 A214292 A212184 * A074660 A002125 A171731

Adjacent sequences: A033766 A033767 A033768 * A033770 A033771 A033772

nonn

N. J. A. Sloane

More terms from Seiichi Manyama, May 22 2017

approved