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Primes of the form A018252(n)-n, where A018252(n)=n-th nonprime.
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%I #3 Mar 30 2012 18:52:27

%S 2,3,5,7,11,11,11,11,11,13,17,19,19,19,23,23,23,23,23,29,29,29,31,31,

%T 31,37,37,37,37,37,41,43,47,47,47,47,47,47,47,47,47,47,47,53,53,53,53,

%U 53,53,53,53,53,59,59,59,61,61,61,61,61,61,61,61,61,67,67,67,67,67,71,71,71,71

%N Primes of the form A018252(n)-n, where A018252(n)=n-th nonprime.

%e n=2: r(2)-2=4-2=2=a(1).

%e n=3: r(3)-3=6-3=3=a(2).

%e n=7: r(7)-7=12-7=5=a(3).

%e n=11: r(11)-11=18-11=7=a(4).

%e n=21: r(21)-21=32-21=11=a(5).

%Y Cf. A000040, A051697, A018252.

%K nonn

%O 1,1

%A _Juri-Stepan Gerasimov_, Sep 13 2008

%E Corrected and extended by _R. J. Mathar_, Sep 26 2008