This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A174189 #10 Oct 24 2018 08:57:40 %S A174189 1,7,9,12,24,30,36,63,90,102,117,126,135,150,156,165,171,180,183,225, %T A174189 234,270,285,369,390,399,402,447,456,501,507,537,570,582,624,627,642, %U A174189 651,654,660,720,735,762,777,855,864,870,885,930,936,945 %N A174189 Numbers k such that A000040(k) +/- A163300(k) are both prime. %F A174189 a(n) = A112529(n-1) for n >= 2. - _Georg Fischer_, Oct 24 2018 %e A174189 a(1) = 1 because 2-0 = 2 is prime, and 2+0 = 2 is prime. %e A174189 a(2) = 7 because 17-14 = 3 is prime, and 17+14 = 31 is prime. %e A174189 a(3) = 9 because 23-18 = 5 is prime, and 23+18 = 41 is prime. %Y A174189 Cf. A000040, A112529, A163300. %K A174189 nonn %O A174189 1,2 %A A174189 _Juri-Stepan Gerasimov_, Mar 11 2010 %E A174189 Corrected (11 replaced by 12, 128 replaced by 126) and extended by _R. J. Mathar_, Apr 16 2010