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 A061134 #4 May 10 2013 12:44:45 %S A061134 0,0,0,0,0,0,0,0,0,226800,2494800,29937600,259459200,1816214400, %T A061134 10897286400,301491590400,4419628012800,51209462304000, %U A061134 482551041772800,6979977625420800,92611036249804800,2078225819199129600 %N A061134 Number of degree-n even permutations of order exactly 8. %F A061134 E.g.f.: - 1/2*exp(x + 1/2*x^2 + 1/4*x^4) - 1/2*exp(x - 1/2*x^2 - 1/4*x^4) + 1/2*exp(x + 1/2*x^2 + 1/4*x^4 + 1/8*x^8) + 1/2*exp(x - 1/2*x^2 - 1/4*x^4 - 1/8*x^8). %Y A061134 Cf. A000085, A001470, A001472, A052501, A053496 - A053505, A001189, A001471, A001473, A061121 - A061128, A000704, A061129 - A061132, A048099, A051695, A061133 - A061135. %K A061134 easy,nonn %O A061134 1,10 %A A061134 _Vladeta Jovovic_, Apr 14 2001