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 A062618 #20 Jul 04 2021 08:42:40 %S A062618 2,29,109,179,14923 %N A062618 Numbers k such that 52^k - 51^k is prime. %C A062618 Terms greater than 1000 are often only strong pseudoprimes. %C A062618 a(6) > 10^5. - _Robert Price_, Nov 28 2012 %o A062618 (PARI) is(n)=ispseudoprime(52^n-51^n) \\ _Charles R Greathouse IV_, Jun 13 2017 %Y A062618 Cf. A000043, A057468, A059801, A059802, A062572-A062666. %K A062618 nonn,hard %O A062618 1,1 %A A062618 _Mike Oakes_, May 18 2001, May 19 2001 %E A062618 a(5) from _Robert Price_, Nov 28 2012