A031054 - OEIS

%I #4 Mar 30 2012 18:56:20

%S 1,2,3,4,5,6,7,23,9,1,13,15,17,19,21,39,12,27,2,31,33,35,37,55,14,30,

%T 45,3,49,51,53,71,16,32,48,63,4,67,69,87,18,34,50,66,81,5,85,103,20,

%U 36,52,68,84,99,6,7,22,38,54,70,86,102,117,311,123

%N a(n)=least k such that base 8 representation of n begins at s(k), where s=A031045.

%K nonn

%O 1,2

%A _Clark Kimberling_