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 A290482 #11 Jun 29 2019 10:18:39 %S A290482 3,5,7,13,31,43,61,211,421,1171 %N A290482 Odd primes that divide a record number of 3-Carmichael numbers. %C A290482 The corresponding numbers of 3-Carmichael numbers are: 1, 3, 6, 8, 9, 12, 16, 22, 24, 25, ... They are records of A290481. %e A290482 13 is in the sequence since it is a factor of 8 3-Carmichael numbers, more numbers than for any prime below it: 3 and 11 are factors of a single 3-Carmichael number, 5 is a factor of 3 numbers, and 7 of 6 numbers. %Y A290482 Cf. A065091 (Odd primes), A087788 (3-Carmichael numbers), A290481. %K A290482 nonn,more %O A290482 1,1 %A A290482 _Amiram Eldar_, Aug 03 2017 %E A290482 a(10) from _Amiram Eldar_, Jun 29 2019