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 A119533 #7 Jul 31 2015 21:00:57 %S A119533 0,2,5,13,43,193,1181,9547,99523,1292831,20374363,380964631, %T A119533 8300770763,207647281343,5890165284053,187490458428149 %N A119533 a(n+1) = prime(1+a(n)), starting with a(0) = 0. %F A119533 a(0) = 0; a(n+1) = prime(1+a(n)) = A000040(1+a(n)). %e A119533 a(1) = prime(1+a(0)) = prime(1+0) = prime(1) = 2. %e A119533 a(2) = prime(1+a(1)) = prime(1+2) = prime(3) = 5. %e A119533 a(3) = prime(1+a(2)) = prime(1+5) = prime(6) = 13. %e A119533 a(4) = prime(1+a(3)) = prime(1+13) = prime(14) = 43. %e A119533 a(5) = prime(1+a(4)) = prime(1+43) = prime(44) = 193. %t A119533 NestList[ Prime[ # + 1] &, 0, 15] (* _Robert G. Wilson v_, May 30 2006 *) %Y A119533 Cf. A000040, A007097. %K A119533 easy,nonn %O A119533 0,2 %A A119533 _Jonathan Vos Post_, May 28 2006 %E A119533 a(15) from _Robert G. Wilson v_, May 30 2006