A256068 - cp's OEIS frontend

A256068 Number T(n,k) of rooted identity 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	1
6	3
7	0
8	2
9	14
10	16
11	0
12	3
13	60
14	174
15	125
16	0
17	6
18	254
19	1434
20	2464
21	1296
22	0
23	12
24	1087
25	10746
26	33362
27	40455
28	16807
29	0
30	25
31	4742
32	77556
33	388312
34	816535
35	763104
36	262144
37	0
38	52
39	21020
40	551460
41	4191916
42	13617210
43	21501684
44	16328620
45	4782969

[1, 0, 1, 0, 1, 3, 0, 2, 14, 16, 0, 3, 60, 174, 125, 0, 6, 254, 1434, 2464, 1296, 0, 12, 1087, 10746, 33362, 40455, 16807, 0, 25, 4742, 77556, 388312, 816535, 763104, 262144, 0, 52, 21020, 551460, 4191916, 13617210, 21501684, 16328620, 4782969]

cp's OEIS Frontend

A256068 Number T(n,k) of rooted identity 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