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 A025184 #21 Nov 04 2018 15:25:55 %S A025184 1,1,7,35,189,1038,5797,32747,186615,1070762,6177698,35802935, %T A025184 208279007,1215507450,7113090285,41724381765,245258504925, %U A025184 1444292029818,8519114704870,50323176446818,297654524450998 %N A025184 a(n) = T(2n,n), where T is the array defined in A025177. %F A025184 a(n) = (2*(3*n+2)*(3*n+1)*A006605(n)-(19*n+4)*(2*n-1)*A006605(n-1))/(13*n+4) for n>0. [_Mark van Hoeij_, Jul 02 2010] %F A025184 Conjecture: 33*n*(3*n-1)*(3*n-2)*a(n) +11*(2047*n^3-10725*n^2+17192*n-8520)*a(n-1) +9*(-4397*n^3-10169*n^2+110500*n-145368)*a(n-2) -54*(2*n-5)*(5353*n^2-33313*n+53904)*a(n-3) -115668*(2*n-5)*(2*n-7)*(n-4)*a(n-4)=0. - _R. J. Mathar_, Feb 25 2015 %p A025184 A025184 := proc(n) %p A025184 A025177(2*n,n) ; %p A025184 end proc: # _R. J. Mathar_, Jul 28 2016 %K A025184 nonn %O A025184 0,3 %A A025184 _Clark Kimberling_