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 A194114 #7 Feb 27 2023 08:06:22
%S A194114 3,9,18,31,47,66,89,115,144,177,213,252,295,341,390,443,499,558,621,
%T A194114 687,756,828,904,983,1065,1151,1240,1332,1428,1527,1629,1735,1844,
%U A194114 1956,2072,2191,2313,2439,2568,2700,2835,2974,3116,3261,3410,3562,3717
%N A194114 Sum{floor(j*sqrt(11)) : 1<=j<=n}; n-th partial sum of Beatty sequence for sqrt(11).
%t A194114 c[n_] := Sum[Floor[j*Sqrt[11]], {j, 1, n}];
%t A194114 c = Table[c[n], {n, 1, 90}]
%Y A194114 Cf. A171982 (Beatty sequence for sqrt(11)).
%K A194114 nonn
%O A194114 1,1
%A A194114 _Clark Kimberling_, Aug 16 2011