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 A058735 #15 Aug 17 2022 12:02:45 %S A058735 1,1,1,1,1,3,1,1,3,7,1,1,3,8,20,1,1,3,8,22,55,1,1,3,8,23,63,162,1,1,3, %T A058735 8,23,65,188,477,1,1,3,8,23,66,196,564,1450,1,1,3,8,23,66,198,590, %U A058735 1732,4446,1,1,3,8,23,66,199,598,1824,5384,13858,1,1,3,8,23,66,199,600,1850 %N A058735 Triangle of coefficients in expansion of enumerators for series-reduced rooted trees by lines at the root. %D A058735 J. Riordan, The blossoming of Schroeder's fourth problem, Acta Math., 137 (1976), 1-16. %H A058735 Sean A. Irvine, <a href="https://github.com/archmageirvine/joeis/blob/master/src/irvine/oeis/a058/A058735.java">Java program</a> (github) %H A058735 <a href="/index/Ro#rooted">Index entries for sequences related to rooted trees</a> %e A058735 Triangle begins: %e A058735 1; %e A058735 1,1; %e A058735 1,1,3; %e A058735 1,1,3,7; %e A058735 ... %Y A058735 Main diagonal is A058737. %Y A058735 Cf. A000669 (row sums). %K A058735 nonn,tabl %O A058735 0,6 %A A058735 _N. J. A. Sloane_, Jan 01 2001 %E A058735 More terms from _Vladeta Jovovic_, May 07 2005