1,3

Table of n, a(n) for n=1..76.

Cf. A052410, A007947.

Sequence in context: A019555 A243074 A052410 * A072775 A243057 A090078

Adjacent sequences: A175778 A175779 A175780 * A175782 A175783 A175784

nonn

Vincenzo Librandi, Sep 03 2010

Edited by the Associate Editors of the OEIS, Sep 03 2010

approved