A117356 - cp's OEIS frontend

A117356 Number of rooted trees with total weight n, where the weight of a node at height k is k (with the root considered to be at level 0).

n	a(n)
0	1
1	1
2	1
3	2
4	2
5	3
6	5
7	6
8	8
9	12
10	16
11	22
12	31
13	41
14	56
15	78
16	104
17	142
18	194
19	260
20	353
21	478
22	641
23	864
24	1164
25	1560
26	2095
27	2810
28	3757
29	5028
30	6722
31	8966
32	11963
33	15945
34	21223
35	28244
36	37551
37	49871
38	66210
39	87829
40	116411
41	154222
42	204162
43	270084
44	357117
45	471881
46	623146

[1, 1, 1, 2, 2, 3, 5, 6, 8, 12, 16, 22, 31, 41, 56, 78, 104, 142, 194, 260, 353, 478, 641, 864, 1164, 1560, 2095, 2810, 3757, 5028, 6722, 8966, 11963, 15945, 21223, 28244, 37551, 49871, 66210, 87829, 116411, 154222, 204162, 270084, 357117, 471881, 623146]

cp's OEIS Frontend

A117356 Number of rooted trees with total weight n, where the weight of a node at height k is k (with the root considered to be at level 0).

Table of values

List of values