A384747 - cp's OEIS frontend

A384747 Triangle read by rows: T(n,k) is the number of rooted ordered trees with node weights summing to n, where the root has weight 0, non-root node weights are in {1,..,k}, and no nodes have the same weight as their parent node.

n	a(n)
0	1
1	0
2	1
3	0
4	1
5	2
6	0
7	1
8	5
9	6
10	0
11	1
12	11
13	15
14	16
15	0
16	1
17	26
18	39
19	43
20	44
21	0
22	1
23	63
24	110
25	123
26	127
27	128
28	0
29	1
30	153
31	308
32	358
33	371
34	375
35	376
36	0
37	1
38	376
39	869
40	1046
41	1096
42	1109
43	1113
44	1114
45	0
46	1
47	931
48	2499
49	3098
50	3278
51	3328
52	3341
53	3345
54	3346
55	0
56	1
57	2317
58	7238
59	9283
60	9904
61	10084
62	10134
63	10147
64	10151
65	10152

[1, 0, 1, 0, 1, 2, 0, 1, 5, 6, 0, 1, 11, 15, 16, 0, 1, 26, 39, 43, 44, 0, 1, 63, 110, 123, 127, 128, 0, 1, 153, 308, 358, 371, 375, 376, 0, 1, 376, 869, 1046, 1096, 1109, 1113, 1114, 0, 1, 931, 2499, 3098, 3278, 3328, 3341, 3345, 3346, 0, 1, 2317, 7238, 9283, 9904, 10084, 10134, 10147, 10151, 10152]

cp's OEIS Frontend

A384747 Triangle read by rows: T(n,k) is the number of rooted ordered trees with node weights summing to n, where the root has weight 0, non-root node weights are in {1,..,k}, and no nodes have the same weight as their parent node.

Table of values

List of values