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%I #10 Oct 19 2013 12:56:24
%S 1,3,4,9,15,16,18,19,21,28,30,31,33,39,40,43,45,46,51,58,60,64,66,73,
%T 81,85,91,94,96,99,103,105,106,108,109,115,121,123,124,130,133,135,
%U 138,144,145,148,150,151,154,156,159,165,168,169,175,178,183,184,186
%N 22n+1 is prime.
%C First terms that are not in A125874: 19, 31, 39, 43, 46, 51, 58, 73, 85, 91 (terms with prime factor > 11).
%H Zak Seidov, <a href="/A215667/b215667.txt">Table of n, a(n) for n = 1..1000</a>
%F a(n) = (A141849(n) - 1)/22.
%o (PARI) isok(n) = isprime(22*n+1); \\ _Michel Marcus_, Oct 19 2013
%Y Cf. A141849, A125874.
%K nonn
%O 1,2
%A _Zak Seidov_, Aug 20 2012
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