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 A054936 #24 Jan 13 2025 22:03:04 %S A054936 2,4,14,47,184,761,3314,14997,69886,333884,1626998,8067786,40580084, %T A054936 206734083,1064666724,5536480877,29036188788 %N A054936 Duplicate of A006443. %K A054936 nonn,dead %O A054936 1,1