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 A125633 #11 Mar 20 2025 22:34:16 %S A125633 2,131,653,15541,15541,24527681,38277341,16048035481,48718117843, %T A125633 5498076927457,38413406256881,2359162908109223,44510586506850631, %U A125633 346100334752156863,12132548193910221893,201533461539194779193 %N A125633 Smallest prime p such that 17^n divides p^16 - 1. %H A125633 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 A125633 (PARI) \\ See A125609 - _Martin Fuller_, Jan 11 2007 %Y A125633 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. A125632 = Smallest prime p such that 13^n divides p^12 - 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 A125633 hard,nonn %O A125633 1,1 %A A125633 _Alexander Adamchuk_, Nov 28 2006 %E A125633 More terms from _Martin Fuller_, Jan 11 2007