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 A024412 #15 Jul 22 2024 15:30:02
%S A024412 0,1,3,6,7,10,15,21,25,28,31,36,45,55,63,65,66,78,90,91,105,120,127,
%T A024412 136,140,153,171,190,210,231,253,255,266,276,300,301,325,350,351,378,
%U A024412 406,435,462,465,496,511,528,561,595,630,666,703,741,750,780,820,861,903,946,966
%N A024412 Ordered Stirling numbers s(n,k) of the second kind.
%C A024412 In other words, list all Stirling numbers of the second kind, sort and remove duplicates.
%H A024412 David W. Wilson, <a href="/A024412/b024412.txt">Table of n, a(n) for n = 1..10001</a>
%t A024412 s2 = Union[Flatten[Table[Table[StirlingS2[n, k], {k, 1, 100}], {n, 1, 100}]]]; Table[s2[[j]], {j, 1, 100}] (* _Vaclav Kotesovec_, Jan 01 2013 *)
%Y A024412 Cf. A008277, A193245, A193246, A374796 (the positive duplicates).
%K A024412 nonn
%O A024412 1,3
%A A024412 _Clark Kimberling_
%E A024412 Corrected by _N. J. A. Sloane_, Nov 21 2007