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 A062585 #26 Jul 04 2021 07:53:10
%S A062585 2,1607,1873,10957
%N A062585 Numbers k such that 19^k - 18^k is prime.
%C A062585 PrimePi[ a(n) ] = {2, 253, 287, 1331, ...}. - _Alexander Adamchuk_, Feb 16 2007
%C A062585 a(5) > 10^5. - _Robert Price_, Jun 05 2012
%C A062585 Terms greater than 1000 may correspond to (unproven) strong pseudoprimes. - _M. F. Hasler_, Sep 16 2013
%o A062585 (PARI) is(n)=ispseudoprime(19^n-18^n) \\ _Charles R Greathouse IV_, Feb 20 2017
%Y A062585 Cf. A000043, A057468, A059801, A059802, A062572-A062583, A188051, A062586-A062666.
%K A062585 nonn,hard
%O A062585 1,1
%A A062585 _Mike Oakes_, May 18 2001, May 19 2001
%E A062585 10957 (found by _Mike Oakes_ in 2003) from _Alexander Adamchuk_, Feb 16 2007