A301422 - cp's OEIS frontend

A301422 Regular triangle where T(n,k) is the number of r-trees of size n with k leaves.

n	a(n)
1	1
2	1
3	0
4	1
5	1
6	0
7	1
8	2
9	1
10	0
11	1
12	4
13	3
14	1
15	0
16	1
17	6
18	8
19	4
20	1
21	0
22	1
23	9
24	19
25	14
26	5
27	1
28	0
29	1
30	12
31	36
32	40
33	21
34	6
35	1
36	0
37	1
38	16
39	65
40	102
41	75
42	30
43	7
44	1
45	0
46	1
47	20
48	106
49	223
50	224
51	123
52	40
53	8
54	1
55	0
56	1
57	25
58	168
59	457
60	604
61	439
62	191
63	52
64	9
65	1
66	0
67	1
68	30
69	248
70	847
71	1433
72	1346
73	764
74	276

[1, 1, 0, 1, 1, 0, 1, 2, 1, 0, 1, 4, 3, 1, 0, 1, 6, 8, 4, 1, 0, 1, 9, 19, 14, 5, 1, 0, 1, 12, 36, 40, 21, 6, 1, 0, 1, 16, 65, 102, 75, 30, 7, 1, 0, 1, 20, 106, 223, 224, 123, 40, 8, 1, 0, 1, 25, 168, 457, 604, 439, 191, 52, 9, 1, 0, 1, 30, 248, 847, 1433, 1346, 764, 276]

cp's OEIS Frontend

A301422 Regular triangle where T(n,k) is the number of r-trees of size n with k leaves.

Table of values

List of values