1,1

Essentially the same as A032664. - R. J. Mathar, Oct 23 2009

Table of n, a(n) for n=1..57.

3 -> 13; 7 -> 17; 9 -> 19; 13 -> 113.

Cf. A120712.

Sequence in context: A325556 A174840 A032664 * A172987 A118556 A279617

Adjacent sequences: A166730 A166731 A166732 * A166734 A166735 A166736

nonn,base

Juri-Stepan Gerasimov, Oct 20 2009

Edited by Charles R Greathouse IV, Apr 24 2010

approved