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 A055298 #11 Mar 07 2022 10:22:52 %S A055298 1,5,30,151,698,2896,11053,38865,127339,390781,1131055,3102493, %T A055298 8105244,20247770,48548878,112089790,249930985,539592972,1130655414, %U A055298 2304230739,4575993619,8870692319,16812222795,31196614962,56750633235 %N A055298 Number of trees with n nodes and 11 leaves. %H A055298 Georg Fischer, <a href="/A055298/b055298.txt">Table of n, a(n) for n = 12..250</a> %H A055298 <a href="/index/Tra#trees">Index entries for sequences related to trees</a> %Y A055298 Column 11 of A055290. %K A055298 nonn %O A055298 12,2 %A A055298 _Christian G. Bower_, May 09 2000