A101372 - cp's OEIS frontend

A101372 Triangle read by rows: T(n,k) is number of leaves at level k in all noncrossing rooted trees on n+1 nodes.

n	a(n)
1	1
2	2
3	2
4	7
5	10
6	4
7	30
8	50
9	32
10	8
11	143
12	260
13	208
14	88
15	16
16	728
17	1400
18	1280
19	704
20	224
21	32
22	3876
23	7752
24	7752
25	5016
26	2128
27	544
28	64
29	21318
30	43890
31	46816
32	33880
33	17248
34	5984
35	1280
36	128
37	120175
38	253000
39	283360
40	222640
41	128800
42	54400
43	16000
44	2944
45	256

[1, 2, 2, 7, 10, 4, 30, 50, 32, 8, 143, 260, 208, 88, 16, 728, 1400, 1280, 704, 224, 32, 3876, 7752, 7752, 5016, 2128, 544, 64, 21318, 43890, 46816, 33880, 17248, 5984, 1280, 128, 120175, 253000, 283360, 222640, 128800, 54400, 16000, 2944, 256]

cp's OEIS Frontend

A101372 Triangle read by rows: T(n,k) is number of leaves at level k in all noncrossing rooted trees on n+1 nodes.

Table of values

List of values