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 A335117 #18 May 24 2020 11:21:58 %S A335117 1,3,25,241,505,65521,131041,171865,138181681,6814407601,20174525281, %T A335117 45185409361,558781423201,685933859521,2601256998740401, %U A335117 4578654981700801,15571124394460034401,375159113055066740401,124708934978441512498801,127589793288205521873601,8644416283014847832296801,29217965124687229769336641 %N A335117 Records in A304480. %H A335117 Seiichi Manyama, <a href="/A335117/b335117.txt">Table of n, a(n) for n = 1..85</a> %H A335117 Project Euler, <a href="https://projecteuler.net/problem=533">Problem 533 - Minimum values of the Carmichael function</a> %H A335117 Wikipedia, <a href="http://en.wikipedia.org/wiki/Carmichael_function">Carmichael function</a> %F A335117 a(n) = A304480(A335116(n)). %F A335117 a(n) = A335128(n-1)+1 for n > 2. %Y A335117 Cf. A304480, A335116, A335128. %K A335117 nonn %O A335117 1,2 %A A335117 _Seiichi Manyama_, May 24 2020