A256064 - cp's OEIS frontend

A256064 Number T(n,k) of rooted trees with n nodes and colored non-root nodes using exactly k colors; triangle T(n,k), n>=1, 0<=k<=n-1, read by rows.

n	a(n)
1	1
2	0
3	1
4	0
5	2
6	3
7	0
8	4
9	18
10	16
11	0
12	9
13	89
14	201
15	125
16	0
17	20
18	418
19	1830
20	2720
21	1296
22	0
23	48
24	1962
25	14845
26	39720
27	43580
28	16807
29	0
30	115
31	9268
32	114624
33	492276
34	934455
35	809760
36	262144
37	0
38	286
39	44375
40	866148
41	5613775
42	16413510
43	23991063
44	17152163
45	4782969

[1, 0, 1, 0, 2, 3, 0, 4, 18, 16, 0, 9, 89, 201, 125, 0, 20, 418, 1830, 2720, 1296, 0, 48, 1962, 14845, 39720, 43580, 16807, 0, 115, 9268, 114624, 492276, 934455, 809760, 262144, 0, 286, 44375, 866148, 5613775, 16413510, 23991063, 17152163, 4782969]

cp's OEIS Frontend

A256064 Number T(n,k) of rooted trees with n nodes and colored non-root nodes using exactly k colors; triangle T(n,k), n>=1, 0<=k<=n-1, read by rows.

Table of values

List of values