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 A109376 #10 May 02 2024 09:54:38 %S A109376 1,11,20,33,35,36,75,79,390,1991,9199,91899,699949,5299999,39999999, %T A109376 428999999,3699949999 %N A109376 Numbers k such that k * (sum of the digits of k raised to their own power) + 1 is prime and sets a new record for number of digits. %Y A109376 Cf. A109372. %K A109376 base,more,nonn %O A109376 1,2 %A A109376 _Jason Earls_, Aug 25 2005 %E A109376 a(15) from _Owen Whitby_, Sep 11 2013 %E A109376 a(16)-a(17) from _Michael S. Branicky_, May 02 2024