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 A174184 #6 Apr 15 2014 00:36:02 %S A174184 1,2,3,7,9,11,12,13,14,18,24,27,28,29,30,36,38,43,44,53,54,55,57,60, %T A174184 63,64,65,66,72,74,80,84,90,93,102,103,108,110,111,117,118,125,126, %U A174184 135,138,141,143,148,150,155,156,162,165,171,174,180,183,186,188,190,198 %N A174184 Prime(n)+even nonprime(n) is prime. %C A174184 Unit together with prime(n)+s*n is prime, s=2. %F A174184 a(n+1)=A076297(n). %e A174184 1 is in the sequence because A000040(1) + A163300(1) = 2 (1st prime) + 0 (1st even nonprime) is prime; %e A174184 2 is in the sequence because A000040(2) + A163300(2) = 3 (2nd prime) + 4 (2nd even nonprime) is prime. %p A174184 From _R. J. Mathar_, Apr 20 2010: (Start) %p A174184 A163300 := proc(n) option remember ; if n = 1 then 0; else for a from procname(n-1)+2 by 2 do if not isprime(a) then return a ; end if; end do; end if; end proc: %p A174184 for n from 1 to 200 do if isprime( ithprime(n) + A163300(n)) then printf("%d,",n) ; end if; end do: (End) %Y A174184 Cf. A000040, A076297, A163300. %K A174184 nonn %O A174184 1,2 %A A174184 _Juri-Stepan Gerasimov_, Mar 11 2010 %E A174184 Entries checked by _R. J. Mathar_, Apr 20 2010