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 A331754 #6 Feb 02 2020 16:23:32 %S A331754 0,1,6,20,48,102,184,317,506,772,1118,1593,2180,2949,3882,5011,6356, %T A331754 8013,9922,12224,14854,17878,21302,25301,29748,34825,40470,46800, %U A331754 53770,61658,70214,79821,90316,101809,114278,127911,142540,158663,176010,194749 %N A331754 A290131/2. %Y A331754 Cf. A290131. %K A331754 nonn %O A331754 1,3 %A A331754 _N. J. A. Sloane_, Feb 02 2020