1,2

N. J. A. Sloane, Table of n, a(n) for n = 1..30

A005171 : 1,0,0,1,0,1,0,1,1,1,0,1,0,1,1,1,0,1,0,1,1,1,0,1,1 ................

a(1)=1, a(2)=10, a(3)=100, a(4)=1001, ...

Cf. A005171 A118255 A118257.

Sequence in context: A138823 A145442 A033146 this_sequence A102397 A132347 A144822

Adjacent sequences: A118253 A118254 A118255 this_sequence A118257 A118258 A118259

nonn,base

Pierre CAMI (pierrecami(AT)tele2.fr), Apr 19 2006

Corrected by Omar E. Pol, Nov 08 2007