A271878 - cp's OEIS frontend

A271878 Triangle T(n,t) read by rows: number of rooted forests with n 2-colored nodes and t rooted trees.

n	a(n)
1	2
2	4
3	3
4	14
5	8
6	4
7	52
8	38
9	12
10	5
11	214
12	160
13	62
14	16
15	6
16	916
17	741
18	288
19	86
20	20
21	7
22	4116
23	3416
24	1408
25	416
26	110
27	24
28	8
29	18996
30	16270
31	6856
32	2110
33	544
34	134
35	28
36	9
37	89894
38	78408
39	34036
40	10576
41	2812
42	672
43	158
44	32
45	10
46	433196
47	384033
48	169936
49	53892
50	14352

[2, 4, 3, 14, 8, 4, 52, 38, 12, 5, 214, 160, 62, 16, 6, 916, 741, 288, 86, 20, 7, 4116, 3416, 1408, 416, 110, 24, 8, 18996, 16270, 6856, 2110, 544, 134, 28, 9, 89894, 78408, 34036, 10576, 2812, 672, 158, 32, 10, 433196, 384033, 169936, 53892, 14352]

cp's OEIS Frontend

A271878 Triangle T(n,t) read by rows: number of rooted forests with n 2-colored nodes and t rooted trees.

Table of values

List of values