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%I #4 Jul 12 2012 00:39:51
%S 1,2,3,5,7,9,10,12,13,15,16,17,19,20,22,23,24,25,26,28,30,31,32,33,35,
%T 37,38,39,40,41,43,45,47,48,49,51,52,54,55,56,57,59,60,62,63,64,66,67,
%U 68,69,71,72,73,74,75,76,77,78,79,80,81,83,85,86,87,88,89,91,92,93,94
%N pi(n-th single or isolated number).
%F a(n)=A000720(A167706(n)).
%K nonn
%O 1,2
%A _Juri-Stepan Gerasimov_, Nov 29 2009
%E Corrected (25 inserted) by _R. J. Mathar_, Nov 30 2009
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