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 A055284 #11 Mar 05 2022 04:20:46 %S A055284 1,9,65,378,1867,8056,31061,108692,349703,1044990,2924863,7722047, %T A055284 19346165,46229029,105831924,233008811,495046641,1017948120, %U A055284 2031186319,3942115307,7457028087,13774178034,24885909121,44043512380 %N A055284 Number of rooted trees with n nodes and 9 leaves. %H A055284 Georg Fischer, <a href="/A055284/b055284.txt">Table of n, a(n) for n = 10..172</a> %H A055284 <a href="/index/Ro#rooted">Index entries for sequences related to rooted trees</a> %Y A055284 Column 9 of A055277. %K A055284 nonn %O A055284 10,2 %A A055284 _Christian G. Bower_, May 09 2000