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Number of rooted trees with n nodes with every leaf at height 9.
3

%I #15 Dec 19 2015 13:10:46

%S 1,1,2,3,6,9,17,28,49,83,144,244,422,719,1234,2109,3615,6173,10565,

%T 18042,30839,52653,89927,153462,261931,446818,762190,1299678,2215990,

%U 3777230,6437673,10969447,18688879,31834676,54220089,92331502

%N Number of rooted trees with n nodes with every leaf at height 9.

%H Alois P. Heinz, <a href="/A048814/b048814.txt">Table of n, a(n) for n = 10..1000</a>

%H N. J. A. Sloane, <a href="/transforms.txt">Transforms</a>

%H <a href="/index/Ro#rooted">Index entries for sequences related to rooted trees</a>

%F Euler transform of A048813 shifted right.

%Y Cf. A048808-A048816.

%Y Column k=9 of A244925.

%K nonn

%O 10,3

%A _Christian G. Bower_, Apr 15 1999