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 A096712 #3 Mar 30 2012 16:49:59 %S A096712 1,1,-1,-107,-73,41897,3027637,986527,-11832720271,-238031459363, %T A096712 22592230600813,2567503517437949,877962977779386211, %U A096712 -72551800185828715163,-189312598480126813670107,-555004914636991112974483,10604546643258382904627047649,1588669342302765693238039021451 %N A096712 Numerators of terms in series expansion of tan(sin(x)). %e A096712 x+1/6*x^3-1/40*x^5-107/5040*x^7-73/24192*x^9+41897/39916800*x^11+... %Y A096712 Cf. A096716, A096664, A096671. %Y A096712 Cf. A003705. %K A096712 sign,frac %O A096712 0,4 %A A096712 _N. J. A. Sloane_, Aug 15 2004