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 A023045 #14 Feb 22 2019 08:45:26 %S A023045 14833,148329,1616786,19104774,243511704,3332744760,48773612880, %T A023045 760381337520,12585067447680,220448163358080,4075249496774400, %U A023045 79300508301907200,1620482929875532800,34699018357638835200,777011144137311283200,18162481202288527104000 %N A023045 8th differences of factorial numbers. %H A023045 Milan Janjic, <a href="http://www.pmfbl.org/janjic/">Enumerative Formulas for Some Functions on Finite Sets</a> %H A023045 <a href="/index/Fa#factorial">Index entries for sequences related to factorial numbers</a> %t A023045 Differences[Range[0,30]!,8] (* _Harvey P. Dale_, Oct 29 2012 *) %K A023045 nonn %O A023045 0,1 %A A023045 _David W. Wilson_