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 A096716 #7 Nov 21 2016 04:24:55
%S A096716 1,6,40,5040,24192,39916800,6227020800,37362124800,355687428096000,
%T A096716 24329020081766400,51090942171709440000,2872446304320552960000,
%U A096716 5170403347776995328000000,2177773890083670432153600000,8841761993739701954543616000000,249176928914482509628047360000000
%N A096716 Denominators of terms in series expansion of tan(sin(x)).
%H A096716 G. C. Greubel, <a href="/A096716/b096716.txt">Table of n, a(n) for n = 0..200</a>
%e A096716 tan(sin(x)) = x + 1/6*x^3 - 1/40*x^5 - 107/5040*x^7 - 73/24192*x^9 + 41897/39916800*x^11 + ...
%t A096716 Denominator[Take[CoefficientList[Series[Tan[Sin[x]], {x,0,50}], x], {2, -1, 2}]] (* _G. C. Greubel_, Nov 21 2016 *)
%Y A096716 Cf. A096712, A096664, A096671.
%Y A096716 Cf. A003705.
%K A096716 nonn,frac
%O A096716 0,2
%A A096716 _N. J. A. Sloane_, Aug 15 2004