1,1

(x^r+1) divides (x^s+1) iff s/r is an odd integer.

Table of n, a(n) for n=1..71.

9 is in the sequence twice because (x^1+1) and (x^3+1) divide (x^9+1).

Cf. A079665, A079672, A079673.

Sequence in context: A114309 A324060 A323828 * A229858 A269020 A057716

Adjacent sequences: A079578 A079579 A079580 * A079582 A079583 A079584

nonn

Jose R. Brox (tautocrona(AT)terra.es), Jan 25 2003

Edited by Don Reble, Jun 12 2003

approved