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 A347779 #7 Sep 13 2021 11:37:46
%S A347779 1,1,2,4,7,13,21,30,41,55,75,94,111,129,158,192,224,249,290,346,403,
%T A347779 439,488,556,639,686,749,828,939,1002,1081,1173,1304,1373,1464,1579,
%U A347779 1750,1838,1963,2111,2337,2423,2574,2740,3023,3120,3292,3511,3858,3978,4157,4413
%N A347779 Number of compositions (ordered partitions) of n into at most 4 squarefree parts.
%t A347779 Table[Length@Flatten[Permutations/@IntegerPartitions[n,4,Select[Range@n,SquareFreeQ]],1],{n,0,51}] (* _Giorgos Kalogeropoulos_, Sep 13 2021 *)
%Y A347779 Cf. A005117, A280194, A341064, A347777, A347778, A347780.
%K A347779 nonn
%O A347779 0,3
%A A347779 _Ilya Gutkovskiy_, Sep 13 2021