A301345 - cp's OEIS frontend

A301345 Regular triangle where T(n,k) is the number of transitive rooted trees with n nodes and k leaves.

n	a(n)
1	1
2	1
3	0
4	0
5	1
6	0
7	0
8	1
9	1
10	0
11	0
12	0
13	2
14	1
15	0
16	0
17	0
18	1
19	3
20	1
21	0
22	0
23	0
24	1
25	2
26	4
27	1
28	0
29	0
30	0
31	0
32	3
33	4
34	5
35	1
36	0
37	0
38	0
39	0
40	2
41	6
42	6
43	6
44	1
45	0
46	0
47	0
48	0
49	1
50	6
51	10
52	9
53	7
54	1
55	0
56	0
57	0
58	0
59	1
60	5
61	12
62	16
63	12
64	8
65	1
66	0
67	0
68	0
69	0
70	0
71	4
72	13
73	22
74	23
75	16
76	9
77	1
78	0
79	0
80	0
81	0
82	0
83	3
84	14
85	27
86	36
87	32
88	20
89	10
90	1
91	0
92	0
93	0
94	0
95	0
96	2
97	11

[1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 2, 1, 0, 0, 0, 1, 3, 1, 0, 0, 0, 1, 2, 4, 1, 0, 0, 0, 0, 3, 4, 5, 1, 0, 0, 0, 0, 2, 6, 6, 6, 1, 0, 0, 0, 0, 1, 6, 10, 9, 7, 1, 0, 0, 0, 0, 1, 5, 12, 16, 12, 8, 1, 0, 0, 0, 0, 0, 4, 13, 22, 23, 16, 9, 1, 0, 0, 0, 0, 0, 3, 14, 27, 36, 32, 20, 10, 1, 0, 0, 0, 0, 0, 2, 11]

cp's OEIS Frontend

A301345 Regular triangle where T(n,k) is the number of transitive rooted trees with n nodes and k leaves.

Table of values

List of values

n	a(n)
1	1
2	1
3	0
4	0
5	1
6	0
7	0
8	1
9	1
10	0
11	0
12	0
13	2
14	1
15	0
16	0
17	0
18	1
19	3
20	1
21	0
22	0
23	0
24	1
25	2
26	4
27	1
28	0
29	0
30	0
31	0
32	3
33	4
34	5
35	1
36	0
37	0
38	0
39	0
40	2
41	6
42	6
43	6
44	1
45	0
46	0
47	0
48	0
49	1
50	6
51	10
52	9
53	7
54	1
55	0
56	0
57	0
58	0
59	1
60	5
61	12
62	16
63	12
64	8
65	1
66	0
67	0
68	0
69	0
70	0
71	4
72	13
73	22
74	23
75	16
76	9
77	1
78	0
79	0
80	0
81	0
82	0
83	3
84	14
85	27
86	36
87	32
88	20
89	10
90	1
91	0
92	0
93	0
94	0
95	0
96	2
97	11

n	a(n)
1	1
2	1
3	0
4	0
5	1
6	0
7	0
8	1
9	1
10	0
11	0
12	0
13	2
14	1
15	0
16	0
17	0
18	1
19	3
20	1
21	0
22	0
23	0
24	1
25	2
26	4
27	1
28	0
29	0
30	0
31	0
32	3
33	4
34	5
35	1
36	0
37	0
38	0
39	0
40	2
41	6
42	6
43	6
44	1
45	0
46	0
47	0
48	0
49	1
50	6
51	10
52	9
53	7
54	1
55	0
56	0
57	0
58	0
59	1
60	5
61	12
62	16
63	12
64	8
65	1
66	0
67	0
68	0
69	0
70	0
71	4
72	13
73	22
74	23
75	16
76	9
77	1
78	0
79	0
80	0
81	0
82	0
83	3
84	14
85	27
86	36
87	32
88	20
89	10
90	1
91	0
92	0
93	0
94	0
95	0
96	2
97	11

n	a(n)
1	1
2	1
3	0
4	0
5	1
6	0
7	0
8	1
9	1
10	0
11	0
12	0
13	2
14	1
15	0
16	0
17	0
18	1
19	3
20	1
21	0
22	0
23	0
24	1
25	2
26	4
27	1
28	0
29	0
30	0
31	0
32	3
33	4
34	5
35	1
36	0
37	0
38	0
39	0
40	2
41	6
42	6
43	6
44	1
45	0
46	0
47	0
48	0
49	1
50	6
51	10
52	9
53	7
54	1
55	0
56	0
57	0
58	0
59	1
60	5
61	12
62	16
63	12
64	8
65	1
66	0
67	0
68	0
69	0
70	0
71	4
72	13
73	22
74	23
75	16
76	9
77	1
78	0
79	0
80	0
81	0
82	0
83	3
84	14
85	27
86	36
87	32
88	20
89	10
90	1
91	0
92	0
93	0
94	0
95	0
96	2
97	11