1,1

The next term has 279 digits and is too large to include here.

Table of n, a(n) for n=1..5.

A056129: 1,2,6,3,1,1,3,1,9,7,3,3,1 ........

3 is prime

31 is prime

311 is prime

3113197 is prime

3113197331 is prime

Next one has 279 digits

Sequence in context: A236527 A108430 A113075 * A037785 A037589 A247351

Adjacent sequences: A111134 A111135 A111136 * A111138 A111139 A111140

nonn,base

Pierre CAMI, Nov 21 2005

approved