1,2

The obvious pattern only holds until a(149) = 389; a(150) = 3100. - Joshua Zucker, May 08 2006

Table of n, a(n) for n=1..66.

a(12) = {concatenation 2*1, 1*2}= 22. a(111)= 321.

a(12345) = 58985.

Sequence in context: A217556 A249873 A102491 * A118761 A024657 A140281

Adjacent sequences: A111703 A111704 A111705 * A111707 A111708 A111709

base,easy,nonn

Amarnath Murthy, Aug 22 2005

More terms from Joshua Zucker, May 08 2006

approved