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 A112430 #12 Jun 25 2019 10:44:40
%S A112430 5394826801,6295936465,12452890681,13577445505,15182481601,
%T A112430 20064165121,22541365441,24673060945,26242929505,26602340401,
%U A112430 27405110161,28553256865,33203881585,38059298641,39696166081,40460634865
%N A112430 Carmichael numbers equal to the product of 7 primes.
%H A112430 Amiram Eldar, <a href="/A112430/b112430.txt">Table of n, a(n) for n = 1..10000</a>
%e A112430 a(1) = 5394826801 = 7*13*17*23*31*67*73.
%o A112430 (PARI) is(n)={bigomega(n)==7&&is_A002997(n)} \\ _M. F. Hasler_, Apr 14 2015
%Y A112430 Cf. A002997, A087788, A141711, A074379, A112428, A112429, A112431, A112432, A006931.
%K A112430 easy,nonn
%O A112430 1,1
%A A112430 _Shyam Sunder Gupta_, Dec 11 2005