A318903 - cp's OEIS frontend

A318903 Number of n-node rooted trees in which seven equals the maximal number of nodes in paths starting at a leaf and ending at the first branching node or at the root.

n	a(n)
7	1
8	1
9	3
10	8
11	22
12	60
13	167
14	464
15	1302
16	3666
17	10370
18	29421
19	83736
20	238891
21	683088
22	1956968
23	5616281
24	16142818
25	46463814
26	133903792
27	386336345
28	1115804329
29	3225691950
30	9333321576
31	27027053245
32	78322024353
33	227126864470
34	659069928758
35	1913612752613
36	5559288014180

[1, 1, 3, 8, 22, 60, 167, 464, 1302, 3666, 10370, 29421, 83736, 238891, 683088, 1956968, 5616281, 16142818, 46463814, 133903792, 386336345, 1115804329, 3225691950, 9333321576, 27027053245, 78322024353, 227126864470, 659069928758, 1913612752613, 5559288014180]

cp's OEIS Frontend

A318903 Number of n-node rooted trees in which seven equals the maximal number of nodes in paths starting at a leaf and ending at the first branching node or at the root.

Table of values

List of values