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%I #15 Feb 20 2021 00:38:32
%S 3,3,5,13,17,29,31,31,37,41,47,53,67,71,71,79,79,83,89,97,97,107,107,
%T 127,131,151,181,197,211,229,241,257,257,269,271,281,283,283,311,353,
%U 373,389,401,409,409,419,419,431,449,463,479,491,499,547,563,577,577
%N Primes of the form prime(k) - 2*k (terms can be repeated).
%e For k=7, prime(7) - 2*7 = 17 - 14 = 3 = a(1).
%e For k=8, prime(8) - 2*8 = 9 - 16 = 3 = a(2).
%e For k=9, prime(9) - 2*9 = 23 - 18 = 5 = a(3).
%e For k=12, prime(12) - 2*12 = 37 - 24 = 13 = a(4).
%e For k=15, prime(15) - 2*15 = 47 - 30 = 17 = a(5).
%e For k=19, prime(19) - 2*19 = 67 - 38 = 29 = a(6).
%e For k=20, prime(20) - 2*20 = 71 - 40 = 31 = a(7).
%Y Cf. A000040.
%K nonn
%O 1,1
%A _Juri-Stepan Gerasimov_, Oct 07 2008
%E A 181 replaced with 281 by _R. J. Mathar_, Apr 14 2010
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