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 A024414 #9 Jul 09 2019 10:47:24
%S A024414 0,3,5,9,11,16,17,18,21,23,24,27,28,32,33,34,37,39,40,42,44,46,49,50,
%T A024414 53,54,55,58,59,60,63,65,67,70,71,74,75,80,81,84,86,89,90,94,95,96,99,
%U A024414 100,104,105,109,110,113,114,117,118,121,122,123,126,127,130,131,134,135,136,138,140
%N A024414 Positions of even numbers in A024412.
%t A024414 s2 = Union[Flatten[Table[Table[StirlingS2[n, k], {k, 1, 200}], {n, 1, 200}]]]; Select[Range[200], EvenQ[s2[[#]]] &] - 1 (* _Vaclav Kotesovec_, Jul 09 2019 *)
%K A024414 nonn
%O A024414 1,2
%A A024414 _Clark Kimberling_
%E A024414 Missing a(1)=0 inserted and later terms corrected by _Sean A. Irvine_, Jul 08 2019