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 A080318 #6 Jan 11 2024 09:40:13 %S A080318 2,56,16256,4186496,274374557696,70239893062016,4603241631720636416, %T A080318 301678043576445270327296,1295697331082095312130350876983296, %U A080318 331698516757016399905370236824584576 %N A080318 Breadth-first-wise A014486-like encoding of the branch-reduced binomial-mod-2 binary trees (A080293). %K A080318 nonn %O A080318 0,1 %A A080318 _Antti Karttunen_, Mar 02 2003