A319539 - cp's OEIS frontend

A319539 Array read by antidiagonals: T(n,k) is the number of binary rooted trees with n leaves of k colors and all non-leaf nodes having out-degree 2.

n	a(n)
1	1
2	2
3	1
4	3
5	3
6	1
7	4
8	6
9	6
10	2
11	5
12	10
13	18
14	18
15	3
16	6
17	15
18	40
19	75
20	54
21	6
22	7
23	21
24	75
25	215
26	333
27	183
28	11
29	8
30	28
31	126
32	495
33	1260
34	1620
35	636
36	23
37	9
38	36
39	196
40	987
41	3600
42	8010
43	8208
44	2316
45	46
46	10
47	45
48	288
49	1778
50	8568
51	28275
52	53240
53	43188
54	8610
55	98
56	11
57	55
58	405
59	2970
60	17934
61	80136
62	232500
63	366680
64	232947
65	32763
66	207

[1, 2, 1, 3, 3, 1, 4, 6, 6, 2, 5, 10, 18, 18, 3, 6, 15, 40, 75, 54, 6, 7, 21, 75, 215, 333, 183, 11, 8, 28, 126, 495, 1260, 1620, 636, 23, 9, 36, 196, 987, 3600, 8010, 8208, 2316, 46, 10, 45, 288, 1778, 8568, 28275, 53240, 43188, 8610, 98, 11, 55, 405, 2970, 17934, 80136, 232500, 366680, 232947, 32763, 207]

cp's OEIS Frontend

A319539 Array read by antidiagonals: T(n,k) is the number of binary rooted trees with n leaves of k colors and all non-leaf nodes having out-degree 2.

Table of values

List of values