A249632 - cp's OEIS frontend

A249632 Triangular array read by rows. T(n,k) is the number of labeled trees with black and white nodes having exactly k black nodes, n>=0, 0<=k<=n.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	3
7	9
8	9
9	3
10	16
11	64
12	96
13	64
14	16
15	125
16	625
17	1250
18	1250
19	625
20	125
21	1296
22	7776
23	19440
24	25920
25	19440
26	7776
27	1296
28	16807
29	117649
30	352947
31	588245
32	588245
33	352947
34	117649
35	16807
36	262144
37	2097152
38	7340032
39	14680064
40	18350080
41	14680064
42	7340032
43	2097152
44	262144

[1, 1, 1, 1, 2, 1, 3, 9, 9, 3, 16, 64, 96, 64, 16, 125, 625, 1250, 1250, 625, 125, 1296, 7776, 19440, 25920, 19440, 7776, 1296, 16807, 117649, 352947, 588245, 588245, 352947, 117649, 16807, 262144, 2097152, 7340032, 14680064, 18350080, 14680064, 7340032, 2097152, 262144]

cp's OEIS Frontend

A249632 Triangular array read by rows. T(n,k) is the number of labeled trees with black and white nodes having exactly k black nodes, n>=0, 0<=k<=n.

Table of values

List of values