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 A104432 #8 Nov 18 2020 19:44:09 %S A104432 1,1,2,4,10,20,57,119,329,760,1942,4452,13574,30665,80117,194856, %T A104432 540694 %N A104432 Number of ways to split 1, 2, 3, ..., 6n into n arithmetic progressions each with 6 terms. %Y A104432 Cf. A104429-A104431, A104433-A104443. %K A104432 nonn %O A104432 0,3 %A A104432 _Jonas Wallgren_, Mar 17 2005 %E A104432 a(0), a(11)-a(16) from _Alois P. Heinz_, Nov 18 2020