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 A169787 #10 Mar 13 2021 15:20:30 %S A169787 1,2,3,5,5,5,9,13,9,5,9,15,19,17,21,29,17,5,9,15,19,19,27,43,43,25,21, %T A169787 37,51,47,51,63,33,5,9,15,19,19,27,43,43,27,27,47,67,71,75,99,91,41, %U A169787 21,37,51,55,71,111,127,87,59,87,125,119,119,133,65,5,9,15,19,19 %N A169787 The rows of the triangle in A169786 converge to this sequence. %Y A169787 Cf. A169786, A151723, A342272 (another version: subtract 1 from each term). %K A169787 nonn %O A169787 1,2 %A A169787 _David Applegate_ and _N. J. A. Sloane_, May 12 2010