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 A248146 #8 Oct 25 2014 14:56:54 %S A248146 13,5,7,3,11,13,5,17,19,7,23,28081,31,11,131,13,41,43,5,47,4951,53, %T A248146 5557,59,61,7,218923,71,73,7577,79,3,83,85878991939597,11,101,103, %U A248146 105107,109,37,113,115117 %N A248146 Primes corresponding to terms of A248145. %F A248146 There exists k=k(n)>=0, such that the number 3^k*a(n) is a concatenation of A248145(n) consecutive odd numbers. %Y A248146 Cf. A248145. %K A248146 nonn %O A248146 1,1 %A A248146 _Vladimir Shevelev_, Oct 02 2014