A031221 - OEIS

%I #4 Mar 30 2012 18:56:21

%S 1,5,7,8,9,11,13,18,28,38,45,48,50,51,54,57,60,61,63,64,65,66,67,69,

%T 70,72,73,75,78,80,81,84,87,90,93,95,96,99,102,105,108,110,111,114,

%U 117,125,136,139,140,142,145,148,155,170,185,200

%N Position of n-th 1 in A031219.

%K nonn

%O 1,2

%A _Clark Kimberling_