1,2

Table of n, a(n) for n=1..32.

Triangle begins:

1

2 3

3 7 29

4 9 289 332929...

Sequence in context: A121875 A036251 A176022 * A127582 A157144 A096714

Adjacent sequences: A113028 A113029 A113030 * A113032 A113033 A113034

nonn,tabl

Amarnath Murthy, Jan 04 2006

Corrected and extended by Joshua Zucker, May 07 2006

a(32) from Max Alekseyev, Feb 13 2012

approved