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 A174008 #5 Mar 30 2012 18:52:39 %S A174008 2,7,11,15,21,25,31,35,41,49,53,61,67,71,77,85,93,97,105,111,115,123, %T A174008 129,137,147,153,157,163,167,173,189,195,203,207,219,223,231,239,245, %U A174008 253,261,265,277,281,287,291,305,319,325,329,335,343,347,359,367,375 %N A174008 n-th prime plus n-th even nonnegative nonprime. %C A174008 Apart from the first term, same as A078916 = prime(n) + 2n. %F A174008 a(n)=A000040(n)+A163300(n). %F A174008 a(n) ~ n log n. %e A174008 a(1)=2 because 2+0=2; a(2)=7 because 3+4=7. %p A174008 Contribution from _R. J. Mathar_, Apr 14 2010: (Start) %p A174008 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 A174008 A174008 := proc(n) ithprime(n)+A163300(n) ; end proc: seq(A174008(n),n=1..80) ; (End) %Y A174008 Cf. A000040, A001477, A078916, A163300. %K A174008 nonn,easy,less %O A174008 1,1 %A A174008 _Juri-Stepan Gerasimov_, Mar 05 2010