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 A191099 #12 Apr 25 2019 07:35:23 %S A191099 11,52,255,1335,7432,43833,272947,1788850,12303997,88586135,666047210, %T A191099 5218287687,42518759887,359651145332,3152929344235,28603584325827, %U A191099 268159523175744,2594608337127709,25878365376280647,265770087291261082,2807571511844891521 %N A191099 5th differences of Bell numbers. %H A191099 Vincenzo Librandi, <a href="/A191099/b191099.txt">Table of n, a(n) for n = 0..500</a> %H A191099 Jocelyn Quaintance and Harris Kwong, <a href="https://www.emis.de/journals/INTEGERS/papers/n29/n29.Abstract.html">A combinatorial interpretation of the Catalan and Bell number difference tables</a>, Integers, 13 (2013), #A29. %t A191099 Differences[BellB[Range[0, 50]], 5] %Y A191099 Cf. A000110, A005493, A011965, A011966, A011967, A106436. %K A191099 nonn %O A191099 0,1 %A A191099 _Vladimir Joseph Stephan Orlovsky_, May 25 2011