Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #4 Mar 30 2012 18:56:20
%S 1,7,2,9,3,11,4,58,6,1,8,65,10,68,7,71,14,74,16,77,18,63,15,83,22,2,
%T 24,89,9,92,23,95,30,98,32,3,34,17,36,31,38,110,40,11,42,25,44,39,46,
%U 4,49,531,52,559,55,506,58,604,61,608,64,612,67,6
%N a(n)=least k such that the base 7 representation of n begins at s(k), where s=A031018.
%K nonn
%O 1,2
%A _Clark Kimberling_