A339780 - cp's OEIS frontend

A339780 Triangle read by rows: T(n,k) is the number of homeomorphically irreducible leaf colored trees with n leaves using exactly k colors.

n	a(n)
0	1
1	0
2	1
3	0
4	1
5	1
6	0
7	1
8	2
9	1
10	0
11	2
12	7
13	9
14	4
15	0
16	3
17	24
18	63
19	68
20	26
21	0
22	7
23	91
24	412
25	812
26	720
27	236
28	0
29	13
30	354
31	2673
32	8512
33	13100
34	9672
35	2752
36	0
37	32
38	1491
39	17571
40	84312
41	199820
42	248904
43	156492
44	39208
45	0
46	73
47	6504
48	117365
49	814184
50	2782970
51	5194580
52	5408620
53	2953792
54	660032

[1, 0, 1, 0, 1, 1, 0, 1, 2, 1, 0, 2, 7, 9, 4, 0, 3, 24, 63, 68, 26, 0, 7, 91, 412, 812, 720, 236, 0, 13, 354, 2673, 8512, 13100, 9672, 2752, 0, 32, 1491, 17571, 84312, 199820, 248904, 156492, 39208, 0, 73, 6504, 117365, 814184, 2782970, 5194580, 5408620, 2953792, 660032]

cp's OEIS Frontend

A339780 Triangle read by rows: T(n,k) is the number of homeomorphically irreducible leaf colored trees with n leaves using exactly k colors.

Table of values

List of values