1,1

Table of n, a(n) for n=1..64.

a(n)=n for n=2, 4, 12, 16, 48, 80, 108, 112, 123, 144.....

Cf. A007400.

Sequence in context: A213771 A266711 A248269 * A055943 A319313 A277275

Adjacent sequences: A081775 A081776 A081777 * A081779 A081780 A081781

nonn

Benoit Cloitre, Apr 10 2003

approved