A006963 - cp's OEIS frontend

A006963 Number of planar embedded labeled trees with n nodes: (2*n-3)!/(n-1)! for n >= 2, a(1) = 1.

n	a(n)
1	1
2	1
3	3
4	20
5	210
6	3024
7	55440
8	1235520
9	32432400
10	980179200
11	33522128640
12	1279935820800
13	53970627110400
14	2490952020480000
15	124903451312640000
16	6761440164390912000
17	393008709555221760000
18	24412776311194951680000
19	1613955767240110694400000

[1, 1, 3, 20, 210, 3024, 55440, 1235520, 32432400, 980179200, 33522128640, 1279935820800, 53970627110400, 2490952020480000, 124903451312640000, 6761440164390912000, 393008709555221760000, 24412776311194951680000, 1613955767240110694400000]

cp's OEIS Frontend

A006963 Number of planar embedded labeled trees with n nodes: (2*n-3)!/(n-1)! for n >= 2, a(1) = 1.

Table of values

List of values