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%I #17 Dec 20 2020 17:10:13
%S 1,1,1,2,4,9,19,45,105,252,600,1435,3406,8076,19035,44749,104770,
%T 244642,569453,1322358,3062909,7079188,16326409,37579189,86331055,
%U 197972483,453188709,1035680593,2363000226,5382924016,12243518476
%N Number of 4-ary rooted trees with n nodes and height at most 7.
%H Sean A. Irvine, <a href="/A036612/b036612.txt">Table of n, a(n) for n = 0..5460</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_.
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