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 A270860 #11 Apr 27 2017 12:01:13
%S A270860 35,165,6545,179998,7509579,850253030
%N A270860 Least Quasi-Carmichael number with n prime factors.
%e A270860 6545 = 5*7*11*17 and 12, 14, 18, 24 all divide 6552.
%o A270860 (Perl) use ntheory ":all"; my $f=2; forcomposites { say $f++," $_" if scalar(factor($_))==$f && is_quasi_carmichael($_); } 1e9; # _Dana Jacobsen_, Apr 27 2017
%Y A270860 Cf. A257750 (Quasi-Carmichael numbers).
%K A270860 nonn,more,hard
%O A270860 2,1
%A A270860 _Tim Johannes Ohrtmann_, Mar 24 2016
%E A270860 a(7) from _Dana Jacobsen_, Apr 04 2016