A048220 - OEIS

%I #4 Mar 30 2012 18:56:54

%S 1,1,2,1,2,1,3,1,1,2,3,1,4,2,1,1,2,3,4,1,5,1,3,1,1,1,4,5,3,6,2,1,1,1,

%T 4,3,1,1,5,6,1,7,3,4,1,2,1,1,2,5,3,4,1,6,7,1,8,3,1,5,1,1,4,1,2,6,2,1,

%U 1,7,8,5,9,1,3,1,1,1,2,6,1,4,3,1,5,7,1,1,1,8

%N a(n)=least m such that column m of T contains n, array T given by A048212.

%K nonn

%O 1,3

%A _Clark Kimberling_