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 A062642 #16 Jul 04 2021 09:01:59 %S A062642 2,5,61,97,167,433 %N A062642 Numbers k such that 76^k - 75^k is prime. %C A062642 Terms > 1000 are often only strong pseudoprimes. %C A062642 a(7) > 10^5. - _Robert Price_, Jul 24 2014 %t A062642 Select[Range[450],PrimeQ[76^#-75^#]&] (* _Harvey P. Dale_, Aug 30 2013 *) %o A062642 (PARI) is(n)=ispseudoprime(76^n-75^n) \\ _Charles R Greathouse IV_, Jun 13 2017 %Y A062642 Cf. A000043, A057468, A059801, A059802, A062572-A062666. %K A062642 nonn,hard %O A062642 1,1 %A A062642 _Mike Oakes_, May 18 2001, May 19 2001