A106489 - cp's OEIS frontend

A106489 Triangle read by rows: T(n,k) is the number of short bushes with n edges and having the leftmost leaf at height k (a short bush is an ordered tree with no nodes of outdegree 1).

n	a(n)
2	1
3	1
4	2
5	1
6	4
7	2
8	9
9	5
10	1
11	21
12	12
13	3
14	51
15	30
16	9
17	1
18	127
19	76
20	25
21	4
22	323
23	196
24	69
25	14
26	1
27	835
28	512
29	189
30	44
31	5
32	2188
33	1353
34	518
35	133
36	20
37	1
38	5798
39	3610
40	1422
41	392
42	70
43	6
44	15511
45	9713
46	3915
47	1140
48	230
49	27
50	1
51	41835
52	26324
53	10813
54	3288
55	726
56	104
57	7
58	113634
59	71799
60	29964

[1, 1, 2, 1, 4, 2, 9, 5, 1, 21, 12, 3, 51, 30, 9, 1, 127, 76, 25, 4, 323, 196, 69, 14, 1, 835, 512, 189, 44, 5, 2188, 1353, 518, 133, 20, 1, 5798, 3610, 1422, 392, 70, 6, 15511, 9713, 3915, 1140, 230, 27, 1, 41835, 26324, 10813, 3288, 726, 104, 7, 113634, 71799, 29964]

cp's OEIS Frontend

A106489 Triangle read by rows: T(n,k) is the number of short bushes with n edges and having the leftmost leaf at height k (a short bush is an ordered tree with no nodes of outdegree 1).

Table of values

List of values