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 A062596 #17 Jul 04 2021 07:53:57 %S A062596 2,149,283,853,1741,4831,8867 %N A062596 Numbers k such that 30^k - 29^k is prime. %C A062596 Terms > 1000 are often only strong pseudoprimes. %C A062596 a(8) > 10^5. - _Robert Price_, Oct 23 2012 %o A062596 (PARI) is(n)=ispseudoprime(30^n-29^n) \\ _Charles R Greathouse IV_, Jun 13 2017 %Y A062596 Cf. A000043, A057468, A059801, A059802, A062572-A062666. %K A062596 nonn,hard %O A062596 1,1 %A A062596 _Mike Oakes_, May 18 2001, May 19 2001