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 A291612 #23 Apr 22 2024 08:12:38 %S A291612 1105,852841,3828001,17098369,118901521,150846961,172947529,186393481, %T A291612 200753281,686059921,771043201,1001152801,1207252621,1269295201, %U A291612 1632785701,1772267281,2301745249,4765950001,4897161361,5278692481,6030849889,8251854001,12121569601,12456671569 %N A291612 Carmichael numbers k that satisfy 2^d == 2^(k/d) (mod k) for all d|k and are not Super-Poulet numbers (A050217). %C A291612 Intersection of A002997 and A291602. %H A291612 Amiram Eldar, <a href="/A291612/b291612.txt">Table of n, a(n) for n = 1..10000</a> (calculated using data from Claude Goutier; terms 1..2665 from Max Alekseyev) %H A291612 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 A291612 <a href="/index/Ca#Carmichael">Index entries for sequences related to Carmichael numbers</a>. %e A291612 Carmichael number 1105 = 5*13*17 is a term because 2^5 == 2^(13*17) (mod 1105), 2^13 == 2^(5*17) (mod 1105), 2^17 == 2^(5*13) (mod 1105) and it is not a Super-Poulet number. %Y A291612 Cf. A002997, A050217, A291602. %K A291612 nonn %O A291612 1,1 %A A291612 _Max Alekseyev_, _Thomas Ordowski_, _Altug Alkan_, Aug 27 2017