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 A061126 #4 May 10 2013 12:44:45 %S A061126 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1307674368000,22230464256000, %T A061126 400148356608000,5068545850368000,101370917007360000, %U A061126 1490152480008192000,24977793950613504000,343667682838351872000 %N A061126 Number of degree-n permutations of order exactly 16. %F A061126 E.g.f.: - exp(x + 1/2*x^2 + 1/4*x^4 + 1/8*x^8) + exp(x + 1/2*x^2 + 1/4*x^4 + 1/8*x^8 + 1/16*x^16). %Y A061126 Cf. A000085, A001470, A001472, A052501, A053496 - A053505, A001189, A001471, A001473, A061121 - A061128. %K A061126 easy,nonn %O A061126 1,16 %A A061126 _Vladeta Jovovic_, Apr 14 2001