A255705 - cp's OEIS frontend

A255705 Number of 2n+1-node rooted trees in which the maximal number of nodes in paths starting at a leaf and ending at the first branching node or at the root equals n+1.

n	a(n)
0	1
1	1
2	3
3	8
4	22
5	60
6	167
7	465
8	1306
9	3681
10	10422
11	29597
12	84313
13	240757
14	689035
15	1975753
16	5675145
17	16326198
18	47032200
19	135658367
20	391733593
21	1132357784
22	3276330780
23	9487885056
24	27497891241
25	79753806451
26	231474005120
27	672250119756
28	1953523496677
29	5680002466125

[1, 1, 3, 8, 22, 60, 167, 465, 1306, 3681, 10422, 29597, 84313, 240757, 689035, 1975753, 5675145, 16326198, 47032200, 135658367, 391733593, 1132357784, 3276330780, 9487885056, 27497891241, 79753806451, 231474005120, 672250119756, 1953523496677, 5680002466125]

cp's OEIS Frontend

A255705 Number of 2n+1-node rooted trees in which the maximal number of nodes in paths starting at a leaf and ending at the first branching node or at the root equals n+1.

Table of values

List of values