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 A062626 #20 Jul 04 2021 09:00:34 %S A062626 4663,8839,14779 %N A062626 Numbers k such that 60^k - 59^k is prime. %C A062626 Terms greater than 1000 often correspond only to strong pseudoprimes. [Clarified by _M. F. Hasler_, Sep 15 2013] %C A062626 a(4) > 10^5. - _Robert Price_, Mar 01 2013 %H A062626 H. Lifchitz, R. Lifchitz, <a href="http://www.primenumbers.net/prptop/searchform.php?form=60^n-59^n">PRP top records (of the form 60^n-59^n)</a> %o A062626 (PARI) is(n)=ispseudoprime(60^n-59^n) \\ _Charles R Greathouse IV_, Jun 13 2017 %Y A062626 Cf. A000043, A057468, A059801, A059802, A062572-A062666. %K A062626 nonn,hard,bref %O A062626 1,1 %A A062626 _Mike Oakes_, May 18 2001, May 19 2001 %E A062626 a(3) from _Robert Price_, Mar 01 2013