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 A055280 #11 Mar 05 2022 04:20:14 %S A055280 1,5,21,72,214,563,1344,2958,6086,11820,21854,38713,66069,109109, %T A055280 175019,273540,417672,624472,916038,1320609,1873896,2620552,3615923, %U A055280 4927965,6639493,8850628,11681631,15275970,19803834,25465914,32497699 %N A055280 Number of rooted trees with n nodes and 5 leaves. %H A055280 Georg Fischer, <a href="/A055280/b055280.txt">Table of n, a(n) for n = 6..172</a> %H A055280 <a href="/index/Ro#rooted">Index entries for sequences related to rooted trees</a> %Y A055280 Column 5 of A055277. %K A055280 nonn %O A055280 6,2 %A A055280 _Christian G. Bower_, May 09 2000