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 A086050 #5 Mar 30 2012 18:50:37 %S A086050 14,9,28,11,7,19,37,99,14,121,18,39,130,219,178,184,187,238,88,11,91, %T A086050 94,154,202,106,481,493,2534,529,60,146,61,69,689,254,562,287,570,87, %U A086050 90,1110,578,440,586,355,442,491,602,1153,606,1181,1134,1233,1142 %N A086050 Position of second occurrence of n-th prime in concatenated primes (A033308, Copeland-Erdos constant). %C A086050 A033308(a(n))=A000030(A000040(n)); a(n)>A086049(n); %C A086050 A033308(a(n)+i)=A033308(A086048(n)+i), 0<=i < A055642(A000040(n)). %K A086050 nonn,base %O A086050 1,1 %A A086050 _Reinhard Zumkeller_, Jul 07 2003