A031309 - OEIS

%I #4 Mar 30 2012 18:56:23

%S 1,2,3,4,5,6,7,8,9,29,11,1,15,17,19,21,23,25,27,49,14,33,2,37,39,41,

%T 43,45,47,69,16,36,55,3,59,61,63,65,67,89,18,38,58,77,4,81,83,85,87,

%U 109,20,40,60,80,99,5,103,105,107,129,22,42,62,82

%N a(n)=least k such that base 10 representation of n begins at s(k), where s=A031298.

%K nonn

%O 1,2

%A _Clark Kimberling_