A143359 - cp's OEIS frontend

A143359 Triangle read by rows, T(n,k) = number of symmetric ordered trees with n edges and root degree k (1 <= k <= n).

n	a(n)
1	1
2	1
3	1
4	2
5	0
6	1
7	3
8	1
9	1
10	1
11	6
12	0
13	3
14	0
15	1
16	10
17	2
18	4
19	2
20	1
21	1
22	20
23	0
24	10
25	0
26	4
27	0
28	1
29	35
30	5
31	15
32	5
33	5
34	3
35	1
36	1
37	70
38	0
39	35
40	0
41	15
42	0
43	5
44	0
45	1
46	126
47	14
48	56
49	14
50	21
51	9
52	6
53	4
54	1
55	1
56	252
57	0
58	126
59	0
60	56
61	0
62	21
63	0
64	6
65	0
66	1
67	462
68	42
69	210
70	42
71	84
72	28
73	28
74	14
75	7
76	5
77	1
78	1
79	924
80	0
81	462
82	0
83	210
84	0
85	84
86	0
87	28
88	0
89	7
90	0
91	1

[1, 1, 1, 2, 0, 1, 3, 1, 1, 1, 6, 0, 3, 0, 1, 10, 2, 4, 2, 1, 1, 20, 0, 10, 0, 4, 0, 1, 35, 5, 15, 5, 5, 3, 1, 1, 70, 0, 35, 0, 15, 0, 5, 0, 1, 126, 14, 56, 14, 21, 9, 6, 4, 1, 1, 252, 0, 126, 0, 56, 0, 21, 0, 6, 0, 1, 462, 42, 210, 42, 84, 28, 28, 14, 7, 5, 1, 1, 924, 0, 462, 0, 210, 0, 84, 0, 28, 0, 7, 0, 1]

cp's OEIS Frontend

A143359 Triangle read by rows, T(n,k) = number of symmetric ordered trees with n edges and root degree k (1 <= k <= n).

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	2
5	0
6	1
7	3
8	1
9	1
10	1
11	6
12	0
13	3
14	0
15	1
16	10
17	2
18	4
19	2
20	1
21	1
22	20
23	0
24	10
25	0
26	4
27	0
28	1
29	35
30	5
31	15
32	5
33	5
34	3
35	1
36	1
37	70
38	0
39	35
40	0
41	15
42	0
43	5
44	0
45	1
46	126
47	14
48	56
49	14
50	21
51	9
52	6
53	4
54	1
55	1
56	252
57	0
58	126
59	0
60	56
61	0
62	21
63	0
64	6
65	0
66	1
67	462
68	42
69	210
70	42
71	84
72	28
73	28
74	14
75	7
76	5
77	1
78	1
79	924
80	0
81	462
82	0
83	210
84	0
85	84
86	0
87	28
88	0
89	7
90	0
91	1

n	a(n)
1	1
2	1
3	1
4	2
5	0
6	1
7	3
8	1
9	1
10	1
11	6
12	0
13	3
14	0
15	1
16	10
17	2
18	4
19	2
20	1
21	1
22	20
23	0
24	10
25	0
26	4
27	0
28	1
29	35
30	5
31	15
32	5
33	5
34	3
35	1
36	1
37	70
38	0
39	35
40	0
41	15
42	0
43	5
44	0
45	1
46	126
47	14
48	56
49	14
50	21
51	9
52	6
53	4
54	1
55	1
56	252
57	0
58	126
59	0
60	56
61	0
62	21
63	0
64	6
65	0
66	1
67	462
68	42
69	210
70	42
71	84
72	28
73	28
74	14
75	7
76	5
77	1
78	1
79	924
80	0
81	462
82	0
83	210
84	0
85	84
86	0
87	28
88	0
89	7
90	0
91	1

n	a(n)
1	1
2	1
3	1
4	2
5	0
6	1
7	3
8	1
9	1
10	1
11	6
12	0
13	3
14	0
15	1
16	10
17	2
18	4
19	2
20	1
21	1
22	20
23	0
24	10
25	0
26	4
27	0
28	1
29	35
30	5
31	15
32	5
33	5
34	3
35	1
36	1
37	70
38	0
39	35
40	0
41	15
42	0
43	5
44	0
45	1
46	126
47	14
48	56
49	14
50	21
51	9
52	6
53	4
54	1
55	1
56	252
57	0
58	126
59	0
60	56
61	0
62	21
63	0
64	6
65	0
66	1
67	462
68	42
69	210
70	42
71	84
72	28
73	28
74	14
75	7
76	5
77	1
78	1
79	924
80	0
81	462
82	0
83	210
84	0
85	84
86	0
87	28
88	0
89	7
90	0
91	1