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 A192671 #7 Aug 14 2025 13:52:31
%S A192671 1,0,1,1,1,2,3,6,9,15,24,39,64,106,174,288,476,791,1315,2192,3659,
%T A192671 6120,10251,17195,28880,48565,81760,137786,232427,392429,663130,
%U A192671 1121446,1897924,3214257,5447110,9236757,15672057,26605536,45190288,76795140,130565138,222083192,377911330,643341150
%N A192671 Floor-Sqrt transform of Riordan numbers (A005043).
%F A192671 a(n) = floor(sqrt(RiordanN(n))).
%t A192671 FSFromSeries[f_,x_,n_] := Map[Floor[Sqrt[#]]&,CoefficientList[Series[f,{x,0,n}],x]]
%t A192671 FSFromSeries[(1+x-Sqrt[1-2x-3x^2])/(2x(1+x)),x,100]
%K A192671 nonn
%O A192671 0,6
%A A192671 _Emanuele Munarini_, Jul 07 2011