%I #15 Dec 19 2020 03:11:37
%S 1,1,1,2,3,6,11,23,45,90,171,325,598,1097,1972,3531,6225,10915,18898,
%T 32507,55302,93410,156208,259250,426227,695235,1123742,1801614,
%U 2862591,4510432,7043455,10904830,16731444,25446285,38349306,57278489
%N Number of binary rooted trees with n nodes and height at most 7.
%H Alois P. Heinz, <a href="/A036590/b036590.txt">Table of n, a(n) for n = 0..127</a>
%H E. M. Rains and N. J. A. Sloane, <a href="https://cs.uwaterloo.ca/journals/JIS/cayley.html">On Cayley's Enumeration of Alkanes (or 4-Valent Trees)</a>, J. Integer Sequences, Vol. 2 (1999), Article 99.1.1.
%H <a href="/index/Ro#rooted">Index entries for sequences related to rooted trees</a>
%K nonn,fini,full
%O 0,4
%A _N. J. A. Sloane_.