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 A336024 #4 Jul 05 2020 07:29:28
%S A336024 1,1,1,4,5,36,61,624,1385,18256,50521,814144,2702765,51475776,
%T A336024 199360981,4381112064,19391512145,482962852096,2404879675441,
%U A336024 66942218896384,370371188237525,11394877025289216,69348874393137901,2336793875186479104,15514534163557086905
%N A336024 Expansion of e.g.f. (1 + sinh(x)) / cos(x).
%F A336024 a(2*n) = A000364(n), a(2*n+1) = A002084(n).
%t A336024 nmax = 24; CoefficientList[Series[(1 + Sinh[x])/Cos[x], {x, 0, nmax}], x] Range[0, nmax]!
%t A336024 a[n_] := If[EvenQ[n], Abs[EulerE[n]], Sum[Binomial[n, k] Abs[EulerE[k]], {k, 0, n}]]; Table[a[n], {n, 0, 24}]
%Y A336024 Cf. A000111, A000364, A002084, A003701.
%K A336024 nonn
%O A336024 0,4
%A A336024 _Ilya Gutkovskiy_, Jul 05 2020