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 A346565 #4 Jul 23 2021 21:02:58
%S A346565 1,2,96,579739960,773527571233557154337704151068262296
%N A346565 Number of compositions (ordered partitions) of 4^n into powers of 4.
%C A346565 The next term is too large to include.
%H A346565 <a href="/index/Com#comp">Index entries for sequences related to compositions</a>
%F A346565 a(n) = [x^(4^n)] 1 / (1 - Sum_{k>=0} x^(4^k)).
%F A346565 a(n) = A087221(A000302(n)).
%t A346565 Table[SeriesCoefficient[1/(1 - Sum[x^(4^k), {k, 0, n}]), {x, 0, 4^n}], {n, 0, 4}]
%Y A346565 Cf. A000302, A078537, A087221, A248377, A337990, A346564.
%K A346565 nonn
%O A346565 0,2
%A A346565 _Ilya Gutkovskiy_, Jul 23 2021