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 A112431 #9 Jun 25 2019 10:45:22
%S A112431 232250619601,306177962545,432207073585,576480525985,658567396081,
%T A112431 689702851201,747941832001,1013666981041,1110495895201,1111586883121,
%U A112431 1286317859905,1292652236161,1341323384401,1471186523521,1567214060545
%N A112431 Carmichael numbers equal to the product of 8 primes.
%H A112431 Amiram Eldar, <a href="/A112431/b112431.txt">Table of n, a(n) for n = 1..10000</a>
%e A112431 a(1) = 232250619601 = 7*11*13*17*31*37*73*163.
%o A112431 (PARI) is(n)={bigomega(n)==8&&is_A002997(n)} \\ _M. F. Hasler_, Apr 14 2015
%Y A112431 Cf. A002997, A087788, A141711, A074379, A112428, A112429, A112430, A112432, A006931.
%K A112431 easy,nonn
%O A112431 1,1
%A A112431 _Shyam Sunder Gupta_, Dec 11 2005