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A007998 Number of primitive solutions to x+y+z=0 (mod n). 1
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 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

I can't reconstruct this. Possibly an erroneous version of A003050 or A048259 - N. J. A. Sloane (njas(AT)research.att.com).

CROSSREFS

Cf. A007997.

Sequence in context: A203899 A114539 A156562 * A202704 A029931 A022290

Adjacent sequences:  A007995 A007996 A007997 * A007999 A008000 A008001

KEYWORD

nonn,obsc

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 15 07:16 EST 2012. Contains 205700 sequences.