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 A280727 #12 Nov 23 2019 04:05:36
%S A280727 0,0,1,0,0,4,0,0,24,0,0,8,0,0,4,0,0,20,0,0,24,0,0,8,0,0,16,0,0,32,0,0,
%T A280727 16,0,0,48,0,0,8,0,0,32,0,0,32,0,0,64,0,0,16,0,0,32,0,0,1152,0,0,16,0,
%U A280727 0,4,0,0,16,0,0,16,0,0
%N A280727 Number of even divisors of Bell(n).
%H A280727 Amiram Eldar, <a href="/A280727/b280727.txt">Table of n, a(n) for n = 0..112</a>
%F A280727 a(n) = A183063(A000110(n)).
%t A280727 f[n_]:=Block[{d=Divisors[BellB[n]]}, Count[EvenQ[d], True]]; Table[f[n], {n, 0, 60}]
%Y A280727 Cf. A000110, A183063, A280589, A280638.
%K A280727 nonn
%O A280727 0,6
%A A280727 _Vincenzo Librandi_, Jan 08 2017
%E A280727 Offset corrected by _Amiram Eldar_, Nov 23 2019