%I #4 Mar 30 2012 18:56:21
%S 1,6,2,8,3,32,5,1,7,39,6,42,11,45,13,2,15,12,17,54,19,8,21,18,23,3,26,
%T 205,29,188,32,238,35,242,38,5,41,10,44,254,1,258,50,262,53,243,7,20,
%U 59,274,39,278,65,282,28,240,9,290,6,294,42,298
%N a(n)=least k such that base 5 representation of n begins at s(k), where s=A031253.
%K nonn
%O 1,2
%A _Clark Kimberling_