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 A199424 #8 Jul 13 2013 12:04:18 %S A199424 2,3,4,4,6,5,8,9,6,6,12,7,14,15,16,7,18,19,20,9,22,23,24,25,8,27,28,8, %T A199424 30,31,11,33,34,35,36,9,12,39,40,41,42,43,13,45,46,47,9,10,50,14,52, %U A199424 53,54,55,56,57,58,15,60,61,62,63,64,65,66,16,11,69,70 %N A199424 Index of first row in triangle A199333 containing n-th prime. %C A199424 a(n) <= n + 1. %H A199424 Reinhard Zumkeller, <a href="/A199424/b199424.txt">Table of n, a(n) for n = 1..150</a> %o A199424 (Haskell) %o A199424 import Data.List (findIndex) %o A199424 import Data.Maybe (fromJust) %o A199424 a199424 n = fromJust $ findIndex (elem $ a000040 n) a199333_tabl %Y A199424 Cf. A199425, A058084. %K A199424 nonn %O A199424 1,1 %A A199424 _Reinhard Zumkeller_, Nov 09 2011