1,1

See A143510.

Table of n, a(n) for n=1..9.

Cf. A002181 (least k such that phi(k)=n).

Sequence in context: A194553 A246108 A184984 * A178106 A205943 A232636

Adjacent sequences: A143508 A143509 A143510 * A143512 A143513 A143514

more,nonn

T. D. Noe, Aug 21 2008

approved