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 A133982 #23 Nov 03 2021 17:41:26 %S A133982 4,6,22420,27636,27850,28986,31168,586020 %N A133982 Numbers n such that 11^n - 2 is prime. %C A133982 Corresponding primes are in A133858. %C A133982 11^22420-2 is a 23349-digit probable prime found with PrimeForm. %C A133982 a(8) > 10^5. - _Robert Price_, Mar 26 2014 %C A133982 a(4) through a(7) also correspond to probable primes. - _Robert Price_, Mar 27 2014 %o A133982 (PARI) is(n)=ispseudoprime(11^n-2) \\ _Charles R Greathouse IV_, May 22 2017 %Y A133982 Cf. A133858, A130652. %K A133982 hard,nonn,more %O A133982 1,1 %A A133982 _Rick L. Shepherd_, Sep 30 2007 %E A133982 a(4)-a(7) from _Robert Price_, Mar 26 2014 %E A133982 a(8) from _Paul Bourdelais_, Nov 03 2021