A144528 - cp's OEIS frontend

A144528 Triangle read by rows: T(n,k) is the number of trees on n unlabeled nodes with all nodes of degree <= k (n>=1, 0 <= k <= n-1).

n	a(n)
1	1
2	0
3	1
4	0
5	0
6	1
7	0
8	0
9	1
10	2
11	0
12	0
13	1
14	2
15	3
16	0
17	0
18	1
19	4
20	5
21	6
22	0
23	0
24	1
25	6
26	9
27	10
28	11
29	0
30	0
31	1
32	11
33	18
34	21
35	22
36	23
37	0
38	0
39	1
40	18
41	35
42	42
43	45
44	46
45	47
46	0
47	0
48	1
49	37
50	75
51	94
52	101
53	104
54	105
55	106
56	0
57	0
58	1
59	66
60	159
61	204
62	223
63	230
64	233
65	234
66	235
67	0
68	0
69	1
70	135
71	355
72	473
73	520
74	539
75	546
76	549
77	550
78	551

[1, 0, 1, 0, 0, 1, 0, 0, 1, 2, 0, 0, 1, 2, 3, 0, 0, 1, 4, 5, 6, 0, 0, 1, 6, 9, 10, 11, 0, 0, 1, 11, 18, 21, 22, 23, 0, 0, 1, 18, 35, 42, 45, 46, 47, 0, 0, 1, 37, 75, 94, 101, 104, 105, 106, 0, 0, 1, 66, 159, 204, 223, 230, 233, 234, 235, 0, 0, 1, 135, 355, 473, 520, 539, 546, 549, 550, 551]

cp's OEIS Frontend

A144528 Triangle read by rows: T(n,k) is the number of trees on n unlabeled nodes with all nodes of degree <= k (n>=1, 0 <= k <= n-1).

Table of values

List of values

n	a(n)
1	1
2	0
3	1
4	0
5	0
6	1
7	0
8	0
9	1
10	2
11	0
12	0
13	1
14	2
15	3
16	0
17	0
18	1
19	4
20	5
21	6
22	0
23	0
24	1
25	6
26	9
27	10
28	11
29	0
30	0
31	1
32	11
33	18
34	21
35	22
36	23
37	0
38	0
39	1
40	18
41	35
42	42
43	45
44	46
45	47
46	0
47	0
48	1
49	37
50	75
51	94
52	101
53	104
54	105
55	106
56	0
57	0
58	1
59	66
60	159
61	204
62	223
63	230
64	233
65	234
66	235
67	0
68	0
69	1
70	135
71	355
72	473
73	520
74	539
75	546
76	549
77	550
78	551

n	a(n)
1	1
2	0
3	1
4	0
5	0
6	1
7	0
8	0
9	1
10	2
11	0
12	0
13	1
14	2
15	3
16	0
17	0
18	1
19	4
20	5
21	6
22	0
23	0
24	1
25	6
26	9
27	10
28	11
29	0
30	0
31	1
32	11
33	18
34	21
35	22
36	23
37	0
38	0
39	1
40	18
41	35
42	42
43	45
44	46
45	47
46	0
47	0
48	1
49	37
50	75
51	94
52	101
53	104
54	105
55	106
56	0
57	0
58	1
59	66
60	159
61	204
62	223
63	230
64	233
65	234
66	235
67	0
68	0
69	1
70	135
71	355
72	473
73	520
74	539
75	546
76	549
77	550
78	551

n	a(n)
1	1
2	0
3	1
4	0
5	0
6	1
7	0
8	0
9	1
10	2
11	0
12	0
13	1
14	2
15	3
16	0
17	0
18	1
19	4
20	5
21	6
22	0
23	0
24	1
25	6
26	9
27	10
28	11
29	0
30	0
31	1
32	11
33	18
34	21
35	22
36	23
37	0
38	0
39	1
40	18
41	35
42	42
43	45
44	46
45	47
46	0
47	0
48	1
49	37
50	75
51	94
52	101
53	104
54	105
55	106
56	0
57	0
58	1
59	66
60	159
61	204
62	223
63	230
64	233
65	234
66	235
67	0
68	0
69	1
70	135
71	355
72	473
73	520
74	539
75	546
76	549
77	550
78	551