1,2
Table of n, a(n) for n=1..7.
Cf. A062396.
Subsequence of A015957.
Cf. A127101 and A128682.
Sequence in context: A013535 A079812 A137694 * A202156 A117711 A203689
Adjacent sequences: A292331 A292332 A292333 * A292335 A292336 A292337
nonn,more
Max Alekseyev, Sep 15 2017
approved