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 A119559 #9 Mar 17 2020 10:17:18
%S A119559 0,1,0,1,2,3,6,12,24,49,108,239,554,1311,3200
%N A119559 Inverse Euler transform of A119268.
%C A119559 Is this sequence always nonnegative? If so, is there a combinatorial interpretation?
%t A119559 A119268 = Cases[Import["https://oeis.org/A119268/b119268.txt", "Table"], {_, _}][[All, 2]];
%t A119559 (* EulerInvTransform is defined in A022562 *)
%t A119559 Join[{0}, EulerInvTransform[Rest @ A119268]] (* Jean-François Alcover, Feb 23 2020, updated Mar 17 2020 *)
%K A119559 more,nonn
%O A119559 0,5
%A A119559 _Franklin T. Adams-Watters_, May 30 2006