%I #2 Mar 31 2012 13:21:20
%S 0,2,4,103,22,10,12,16,6,52,122,115,56,40,18,112,86,205,30,50,70,100,
%T 76,162,93,80,66,108,102,146,166,274,312,170,128,208,655,206,295,198,
%U 120,156,264,176,96,246,408,190,85,476,306,260,180,414,342,508,380
%N Leftmost column of A166091.
%C a(n) gives the least i, for which A166086(i) = 2n+1.
%Y See also A166093, A166096.
%K nonn
%O 0,2
%A _Antti Karttunen_, Oct 08 2009