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 A352987 #33 Apr 22 2024 08:12:26 %S A352987 65700513721,168003672409,459814831561,13685652197857,34477679139751, %T A352987 74031531351121,92327722290241,206175669172201,704077371354601, %U A352987 1882982959757929,2901482064497017,3715607011189609,5516564718607489,5636724028491697,6137426373439681,14987802403246609 %N A352987 Carmichael numbers (A002997) that are overpseudoprimes to base 2 (A141232). %C A352987 If we define f(n) to be the smallest number in the sequence with n prime factors, then we have: %C A352987 f(3) = 65700513721, %C A352987 f(4) <= 84286331493236478328609, %C A352987 f(5) <= 3848515708338676403444146123852434164444641. %H A352987 Amiram Eldar, <a href="/A352987/b352987.txt">Table of n, a(n) for n = 1..450</a> (calculated using data from Claude Goutier; terms 1..102 from Daniel Suteu) %H A352987 Claude Goutier, <a href="http://www-labs.iro.umontreal.ca/~goutier/OEIS/A055553/">Compressed text file carm10e22.gz containing all the Carmichael numbers up to 10^22</a>. %H A352987 <a href="/index/Ca#Carmichael">Index entries for sequences related to Carmichael numbers</a>. %Y A352987 Intersection of A002997 and A141232. %Y A352987 Intersection of A291637 and A141232. %K A352987 nonn %O A352987 1,1 %A A352987 _Daniel Suteu_, May 06 2022