1,2

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

Cf. A025051.

Sequence in context: A244053 A275833 A307113 * A288509 A283295 A080276

Adjacent sequences: A025052 A025053 A025054 * A025056 A025057 A025058

nonn

Clark Kimberling

a(71) corrected by Sean A. Irvine, Aug 05 2019

approved