A301342 - cp's OEIS frontend

A301342 Regular triangle where T(n,k) is the number of rooted identity trees with n nodes and k leaves.

n	a(n)
1	1
2	1
3	0
4	1
5	0
6	0
7	1
8	1
9	0
10	0
11	1
12	2
13	0
14	0
15	0
16	1
17	4
18	1
19	0
20	0
21	0
22	1
23	6
24	5
25	0
26	0
27	0
28	0
29	1
30	9
31	13
32	2
33	0
34	0
35	0
36	0
37	1
38	12
39	28
40	11
41	0
42	0
43	0
44	0
45	0
46	1
47	16
48	53
49	40
50	3
51	0
52	0
53	0
54	0
55	0
56	1
57	20
58	91
59	109
60	26
61	0
62	0
63	0
64	0
65	0
66	0
67	1
68	25
69	146
70	254
71	116
72	6
73	0
74	0
75	0
76	0
77	0
78	0
79	1
80	30
81	223
82	524
83	387
84	61
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	1
93	36

[1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 2, 0, 0, 0, 1, 4, 1, 0, 0, 0, 1, 6, 5, 0, 0, 0, 0, 1, 9, 13, 2, 0, 0, 0, 0, 1, 12, 28, 11, 0, 0, 0, 0, 0, 1, 16, 53, 40, 3, 0, 0, 0, 0, 0, 1, 20, 91, 109, 26, 0, 0, 0, 0, 0, 0, 1, 25, 146, 254, 116, 6, 0, 0, 0, 0, 0, 0, 1, 30, 223, 524, 387, 61, 0, 0, 0, 0, 0, 0, 0, 1, 36]

cp's OEIS Frontend

A301342 Regular triangle where T(n,k) is the number of rooted identity trees with n nodes and k leaves.

Table of values

List of values

n	a(n)
1	1
2	1
3	0
4	1
5	0
6	0
7	1
8	1
9	0
10	0
11	1
12	2
13	0
14	0
15	0
16	1
17	4
18	1
19	0
20	0
21	0
22	1
23	6
24	5
25	0
26	0
27	0
28	0
29	1
30	9
31	13
32	2
33	0
34	0
35	0
36	0
37	1
38	12
39	28
40	11
41	0
42	0
43	0
44	0
45	0
46	1
47	16
48	53
49	40
50	3
51	0
52	0
53	0
54	0
55	0
56	1
57	20
58	91
59	109
60	26
61	0
62	0
63	0
64	0
65	0
66	0
67	1
68	25
69	146
70	254
71	116
72	6
73	0
74	0
75	0
76	0
77	0
78	0
79	1
80	30
81	223
82	524
83	387
84	61
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	1
93	36

n	a(n)
1	1
2	1
3	0
4	1
5	0
6	0
7	1
8	1
9	0
10	0
11	1
12	2
13	0
14	0
15	0
16	1
17	4
18	1
19	0
20	0
21	0
22	1
23	6
24	5
25	0
26	0
27	0
28	0
29	1
30	9
31	13
32	2
33	0
34	0
35	0
36	0
37	1
38	12
39	28
40	11
41	0
42	0
43	0
44	0
45	0
46	1
47	16
48	53
49	40
50	3
51	0
52	0
53	0
54	0
55	0
56	1
57	20
58	91
59	109
60	26
61	0
62	0
63	0
64	0
65	0
66	0
67	1
68	25
69	146
70	254
71	116
72	6
73	0
74	0
75	0
76	0
77	0
78	0
79	1
80	30
81	223
82	524
83	387
84	61
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	1
93	36

n	a(n)
1	1
2	1
3	0
4	1
5	0
6	0
7	1
8	1
9	0
10	0
11	1
12	2
13	0
14	0
15	0
16	1
17	4
18	1
19	0
20	0
21	0
22	1
23	6
24	5
25	0
26	0
27	0
28	0
29	1
30	9
31	13
32	2
33	0
34	0
35	0
36	0
37	1
38	12
39	28
40	11
41	0
42	0
43	0
44	0
45	0
46	1
47	16
48	53
49	40
50	3
51	0
52	0
53	0
54	0
55	0
56	1
57	20
58	91
59	109
60	26
61	0
62	0
63	0
64	0
65	0
66	0
67	1
68	25
69	146
70	254
71	116
72	6
73	0
74	0
75	0
76	0
77	0
78	0
79	1
80	30
81	223
82	524
83	387
84	61
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	1
93	36