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 A125632 #7 Apr 03 2014 11:35:07 %S A125632 2,19,239,239,220861,7654109,533810141,533810141,822557039, %T A125632 38050596989,2395794301259,58713568184837,358661570404751, %U A125632 22771419458231473,65106791321062951,1951482088631313647,13942901952235522979 %N A125632 Smallest prime p such that 13^n divides p^12 - 1. %H A125632 W. Keller and J. Richstein <a href="http://www1.uni-hamburg.de/RRZ/W.Keller/FermatQuotient.html">Fermat quotients that are divisible by p</a>. %o A125632 (PARI) See A125609 %Y A125632 Cf. A125609 = Smallest prime p such that 3^n divides p^2 - 1. Cf. A125610 = Smallest prime p such that 5^n divides p^4 - 1. Cf. A125611 = Smallest prime p such that 7^n divides p^6 - 1. Cf. A125612 = Smallest prime p such that 11^n divides p^10 - 1. Cf. A125633 = Smallest prime p such that 17^n divides p^16 - 1. Cf. A125634 = Smallest prime p such that 19^n divides p^18 - 1. Cf. A125635 = Smallest prime p such that 257^n divides p^256 - 1. %K A125632 hard,nonn %O A125632 1,1 %A A125632 _Alexander Adamchuk_, Nov 28 2006 %E A125632 More terms from _Martin Fuller_, Jan 11 2007