A007998 Number of primitive solutions to x + y + z = 0 (mod n).

1, 2, 3, 3, 4, 5, 5, 7, 8, 9, 9, 15, 11, 17, 17, 18, 18, 31, 21, 33, 30, 33, 30, 53, 34, 48, 46, 53, 43, 87, 47, 73, 69, 79, 66, 110, 65, 100, 94, 111, 80, 159, 86, 135, 130, 135, 108, 202, 116, 181, 153, 175, 133, 255, 150, 212

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• obsc

Comments

I can't reconstruct this. Possibly an erroneous version of A003050 or A048259. - N. J. A. Sloane

Crossrefs

Cf. A007997.