%I #4 Mar 30 2012 18:52:37
%S 1,2,4,6,8,9,10,11,12,14,15,16,17,18,20,21,22,23,25,26,27,28,29,30,32,
%T 33,34,35,36,37,39,40,41,42,44,45,46,47,49,50,51,52,53,55,56,57,58,59,
%U 60,62,63,64,65,66,67,69,70,71,72,74,75,76,77,78,79,81,82,83,85,86,87
%N The positions of non-single or nonisolated numbers in A001477.
%F a(n) = 1+A167707(n).
%Y Cf. A001477, A167707.
%K nonn,less
%O 1,2
%A _Juri-Stepan Gerasimov_, Nov 27 2009
%E Formula corrected by _R. J. Mathar_, Jun 04 2010