A240159 - cp's OEIS frontend

A240159 Triangle read by rows: T(n,k) = number of trees with n vertices and k segments (n >= 2; 1 <= k <= n-1).

n	a(n)
2	1
3	1
4	0
5	1
6	0
7	1
8	1
9	0
10	1
11	1
12	1
13	0
14	2
15	1
16	2
17	1
18	0
19	3
20	2
21	3
22	2
23	1
24	0
25	4
26	3
27	7
28	4
29	4
30	1
31	0
32	5
33	5
34	12
35	10
36	9
37	5
38	1
39	0
40	7
41	6
42	22
43	20
44	25
45	15
46	10
47	1
48	0
49	8
50	9
51	34
52	38
53	54
54	46
55	31
56	14
57	1
58	0
59	10
60	11
61	53
62	65
63	114
64	111
65	103
66	57
67	26
68	1
69	0
70	12
71	15
72	76
73	108
74	212
75	250
76	267
77	204
78	114
79	42
80	1
81	0
82	14
83	18
84	110
85	167
86	383
87	502
88	644
89	583
90	440
91	219
92	78

[1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 2, 1, 2, 1, 0, 3, 2, 3, 2, 1, 0, 4, 3, 7, 4, 4, 1, 0, 5, 5, 12, 10, 9, 5, 1, 0, 7, 6, 22, 20, 25, 15, 10, 1, 0, 8, 9, 34, 38, 54, 46, 31, 14, 1, 0, 10, 11, 53, 65, 114, 111, 103, 57, 26, 1, 0, 12, 15, 76, 108, 212, 250, 267, 204, 114, 42, 1, 0, 14, 18, 110, 167, 383, 502, 644, 583, 440, 219, 78]

cp's OEIS Frontend

A240159 Triangle read by rows: T(n,k) = number of trees with n vertices and k segments (n >= 2; 1 <= k <= n-1).

Table of values

List of values

n	a(n)
2	1
3	1
4	0
5	1
6	0
7	1
8	1
9	0
10	1
11	1
12	1
13	0
14	2
15	1
16	2
17	1
18	0
19	3
20	2
21	3
22	2
23	1
24	0
25	4
26	3
27	7
28	4
29	4
30	1
31	0
32	5
33	5
34	12
35	10
36	9
37	5
38	1
39	0
40	7
41	6
42	22
43	20
44	25
45	15
46	10
47	1
48	0
49	8
50	9
51	34
52	38
53	54
54	46
55	31
56	14
57	1
58	0
59	10
60	11
61	53
62	65
63	114
64	111
65	103
66	57
67	26
68	1
69	0
70	12
71	15
72	76
73	108
74	212
75	250
76	267
77	204
78	114
79	42
80	1
81	0
82	14
83	18
84	110
85	167
86	383
87	502
88	644
89	583
90	440
91	219
92	78

n	a(n)
2	1
3	1
4	0
5	1
6	0
7	1
8	1
9	0
10	1
11	1
12	1
13	0
14	2
15	1
16	2
17	1
18	0
19	3
20	2
21	3
22	2
23	1
24	0
25	4
26	3
27	7
28	4
29	4
30	1
31	0
32	5
33	5
34	12
35	10
36	9
37	5
38	1
39	0
40	7
41	6
42	22
43	20
44	25
45	15
46	10
47	1
48	0
49	8
50	9
51	34
52	38
53	54
54	46
55	31
56	14
57	1
58	0
59	10
60	11
61	53
62	65
63	114
64	111
65	103
66	57
67	26
68	1
69	0
70	12
71	15
72	76
73	108
74	212
75	250
76	267
77	204
78	114
79	42
80	1
81	0
82	14
83	18
84	110
85	167
86	383
87	502
88	644
89	583
90	440
91	219
92	78

n	a(n)
2	1
3	1
4	0
5	1
6	0
7	1
8	1
9	0
10	1
11	1
12	1
13	0
14	2
15	1
16	2
17	1
18	0
19	3
20	2
21	3
22	2
23	1
24	0
25	4
26	3
27	7
28	4
29	4
30	1
31	0
32	5
33	5
34	12
35	10
36	9
37	5
38	1
39	0
40	7
41	6
42	22
43	20
44	25
45	15
46	10
47	1
48	0
49	8
50	9
51	34
52	38
53	54
54	46
55	31
56	14
57	1
58	0
59	10
60	11
61	53
62	65
63	114
64	111
65	103
66	57
67	26
68	1
69	0
70	12
71	15
72	76
73	108
74	212
75	250
76	267
77	204
78	114
79	42
80	1
81	0
82	14
83	18
84	110
85	167
86	383
87	502
88	644
89	583
90	440
91	219
92	78