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 A054080 #6 May 27 2021 14:15:44 %S A054080 1,3,2,5,4,10,10,23,32,62,100,198,336,642,1166,2205,4081,7750,14533, %T A054080 27658,52388,99960,190558,364938,698874,1342514,2580827,4971652, %U A054080 9586396,18514020,35790268,69275871,134215781,260305069,505286428 %N A054080 Inverse Moebius transform of A001037 (starting at term 0). %Y A054080 Cf. A001037. %K A054080 nonn %O A054080 0,2 %A A054080 _N. J. A. Sloane_, Apr 29 2000