%I #4 Mar 30 2012 18:56:05

%S 5,7,9,11,14,17,20,23,25,28,30,33,35,38,40,43,46,48,51,54,56,59,62,64,

%T 67,70,72,75,77,80,83,85,88,90,93,96,98,101,103,106,109,111,114,116,

%U 119,122,124,127,130,132,135,137,140,143,145

%N a(n) = greatest k such that s(k) = n, where s = A026280.

%K nonn

%O 1,1

%A _Clark Kimberling_