%I #4 Mar 30 2012 18:55:53
%S 1,2,6,7,8,10,11,12,14,15,16,21,22,23,28,29,30,35,36,37,39,40,41,43,
%T 44,45,47,48,49,54,55,56,58,59,60,62,63,64,66,67,68,73,74,75,77,78,79,
%U 81,82,83,85,86,87,92,93,94,99,100,101,106,107,108,113,114,115
%N a(n) = c([ n/3 ]) + n, with a(1) = 1, a(2) = 2, c = complement to a.
%K nonn
%O 1,2
%A _Clark Kimberling_