A241555 - cp's OEIS frontend

A241555 Triangle read by rows: Number T(n,k) of 2-colored binary rooted trees with n nodes and exactly k <= n nodes of a specific color.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	2
7	5
8	5
9	2
10	3
11	11
12	16
13	11
14	3
15	6
16	26
17	50
18	50
19	26
20	6
21	11
22	60
23	143
24	188
25	143
26	60
27	11
28	23
29	142
30	404
31	656
32	656
33	404
34	142
35	23
36	46
37	334
38	1105
39	2143
40	2652
41	2143
42	1105
43	334
44	46
45	98
46	794
47	2995
48	6737
49	9934
50	9934
51	6737
52	2995
53	794
54	98
55	207
56	1888
57	7999
58	20504
59	35080
60	41788
61	35080
62	20504
63	7999
64	1888
65	207

[1, 1, 1, 1, 2, 1, 2, 5, 5, 2, 3, 11, 16, 11, 3, 6, 26, 50, 50, 26, 6, 11, 60, 143, 188, 143, 60, 11, 23, 142, 404, 656, 656, 404, 142, 23, 46, 334, 1105, 2143, 2652, 2143, 1105, 334, 46, 98, 794, 2995, 6737, 9934, 9934, 6737, 2995, 794, 98, 207, 1888, 7999, 20504, 35080, 41788, 35080, 20504, 7999, 1888, 207]

cp's OEIS Frontend

A241555 Triangle read by rows: Number T(n,k) of 2-colored binary rooted trees with n nodes and exactly k <= n nodes of a specific color.

Table of values

List of values