0,4

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

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

Sequence in context: A143902 A085472 A054242 * A033775 A033791 A039913

Adjacent sequences: A033764 A033765 A033766 * A033768 A033769 A033770

nonn

N. J. A. Sloane

More terms from Seiichi Manyama, May 22 2017

approved