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 A369220 #4 Jan 20 2024 09:33:35
%S A369220 1,1,1,1,5,8,13,21,34,149,274,504,927,1705,3136,5768,10609,19513,
%T A369220 35890,66012,121415,223317,410744,755476,1389537,4586976,8662591,
%U A369220 16359466,30895160,58346092,110187694,208091537,392984789,742159180,1401581598,2646913261,7359931330,14066178853
%N A369220 Number of compositions (ordered partitions) of n into squarefree parts not greater than sqrt(n).
%t A369220 Table[SeriesCoefficient[1/(1 - Sum[Boole[SquareFreeQ[k]] x^k, {k, 1, Floor[Sqrt[n]]}]), {x, 0, n}], {n, 0, 37}]
%Y A369220 Cf. A280194, A364526.
%K A369220 nonn
%O A369220 0,5
%A A369220 _Ilya Gutkovskiy_, Jan 16 2024