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 A220825 #10 Sep 17 2018 17:05:58 %S A220825 5,15,110,965,9376,97775,1068450,12081605,140160650,1658936806, %T A220825 19953117520,243173225615,2996409047690,37268293795255, %U A220825 467259511562294,5899263870621530,74934997567372640,956996551484947905,12280538887616448930,158266409616840974927 %N A220825 Number of rooted gene trees with n leaves on the label set [5]. %H A220825 Andrew Howroyd, <a href="/A220825/b220825.txt">Table of n, a(n) for n = 1..200</a> %H A220825 V. P. Johnson, <a href="http://people.math.sc.edu/czabarka/Theses/JohnsonThesis.pdf">Enumeration Results on Leaf Labeled Trees</a>, Ph. D. Dissertation, Univ. Southern Calif., 2012. %Y A220825 Column 5 of A319254. %K A220825 nonn %O A220825 1,1 %A A220825 _N. J. A. Sloane_, Dec 22 2012 %E A220825 Terms a(11) and beyond from _Andrew Howroyd_, Sep 17 2018