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 A133858 #18 Nov 28 2020 13:10:42 %S A133858 14639,1771559 %N A133858 Primes of the form 11^k - 2. %C A133858 Last digit of all terms is 9. %C A133858 The nest term (11^22420-2) is too large to be displayed; see A133982 for the corresponding k. - _Joerg Arndt_, Nov 28 2020 %e A133858 a(1) = 11^4 - 2 = 14639, %e A133858 a(2) = 11^6 - 2 = 1771559. %Y A133858 Cf. A104096 (largest prime <= 11^n), A130652, A128472, A084714 (smallest prime of the form (2n-1)^k - 2). %Y A133858 Cf. A014224, A109080, A090669, A128455, A133982, A128457, A128458, A128459, A128460, A128461. %K A133858 nonn,bref,hard %O A133858 1,1 %A A133858 _Alexander Adamchuk_, Sep 27 2007