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 A190801 #7 Mar 30 2012 18:35:55
%S A190801 6,15,55,145,889,5089,55561,927889,6169249,39916921,678585889,
%T A190801 13891047241,417210398089,1656387533161,56229997825849,
%U A190801 481224167424529,11026310270976961,236887827111937369,10826413936386055921
%N A190801 Least semiprime whose prime factors differ by n!.
%C A190801 Appears to be the same as A037152(n) * A037153(n).
%e A190801 a(5) = 889 because 889 = 7 * 127 , and 127 - 7 = 120 = 5!
%t A190801 f[n_] := Block[{p=2}, While[! PrimeQ[p+n!], p=NextPrime[p]]; p*(p+n!)]; Table[f[n], {n, 60}]
%K A190801 nonn
%O A190801 1,1
%A A190801 _Michel Lagneau_, May 20 2011