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 A369732 #10 Jan 30 2024 16:00:38
%S A369732 0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,0,0,0,0,21,0,0,126,0,0,0,0,1428,
%T A369732 0,0,9786,7,0,0,22,150437,0,0,836737,1838,0,0,15847,14696425,0,0,
%U A369732 83010230,738627,0,0,6024822,1640652994,0,0,10271377082,226033104,0,0
%N A369732 Number of solutions to +- 1^4 +- 2^4 +- 3^4 +- ... +- n^4 = 1.
%F A369732 a(n) = [x^1] Product_{k=1..n} (x^(k^4) + 1/x^(k^4)).
%Y A369732 Cf. A000583, A063866, A111253, A158465, A368206, A369629, A369730, A369731.
%K A369732 nonn
%O A369732 0,18
%A A369732 _Ilya Gutkovskiy_, Jan 30 2024
%E A369732 a(46)-a(60) from _Alois P. Heinz_, Jan 30 2024