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

1,2

Comments

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

Links

Table of n, a(n) for n=1..56.

Crossrefs

Cf. A007997.

Sequence in context: A272611 A156562 A290736 * A203899 A202704 A273004

Adjacent sequences: A007995 A007996 A007997 * A007999 A008000 A008001

Keyword

nonn,obsc

Author

N. J. A. Sloane

Status

approved