A244925 - cp's OEIS frontend

A244925 Number T(n,k) of n-node unlabeled rooted trees with every leaf at height k; triangle T(n,k), n>=1, 0<=k<=n-1, read by rows.

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

[1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 2, 1, 1, 0, 1, 2, 2, 1, 1, 0, 1, 4, 3, 2, 1, 1, 0, 1, 4, 5, 3, 2, 1, 1, 0, 1, 7, 7, 6, 3, 2, 1, 1, 0, 1, 8, 12, 8, 6, 3, 2, 1, 1, 0, 1, 12, 18, 15, 9, 6, 3, 2, 1, 1, 0, 1, 14, 27, 23, 16, 9, 6, 3, 2, 1, 1, 0, 1, 21, 42, 39, 26, 17, 9, 6, 3, 2, 1, 1]

cp's OEIS Frontend

A244925 Number T(n,k) of n-node unlabeled rooted trees with every leaf at height k; triangle T(n,k), n>=1, 0<=k<=n-1, read by rows.

Table of values

List of values

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

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

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