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 A192678 #7 Aug 14 2025 13:52:18 %S A192678 1,1,1,3,6,14,32,79,203,541,1495,4267,12543,37902,117519,373236, %T A192678 1212418,4023007,13619993,46998318,165144243,590411905,2145978422, %U A192678 7924484313,29710783080,113031311232,436102652463,1705552475812,6758097531570,27119230158894 %N A192678 Floor-Sqrt transform of idempotent endomap numbers (A000248). %F A192678 a(n) = floor(sqrt(A000248(n))). %t A192678 FSFromExpSeries[f_,x_,n_] := Map[Floor[Sqrt[#]]&,CoefficientList[Series[f,{x,0,n}],x]Table[k!,{k,0,n}]] %t A192678 FSFromExpSeries[Exp[x Exp[x]],x,40] %K A192678 nonn %O A192678 0,4 %A A192678 _Emanuele Munarini_, Jul 07 2011