%I #18 Apr 13 2021 22:58:17
%S 1,2,1,9,2,1,4,9,37,17,2,8,1,4,31,44,9,41,37,51,17,6,2,8,36,16,1,60,4,
%T 31,160,109,44,22,9,41,155,37,261,97,51,115,17,6,14,2,29,141,8,40,36,
%U 50,16,5,1,85,60,49,4,59,31,161,160,479,109,142,44
%N a(n) is the least k such that the base-2 representation of n begins at s(k) in A030324.
%Y Cf. A030324.
%K nonn
%O 1,2
%A _Clark Kimberling_
%E a(39) and a(64) corrected by _Sean A. Irvine_, Mar 30 2020