A298426 - cp's OEIS frontend

A298426 Regular triangle where T(n,k) is number of k-ary rooted trees with n nodes.

n	a(n)
1	1
2	0
3	1
4	0
5	1
6	1
7	0
8	1
9	0
10	1
11	0
12	1
13	1
14	0
15	1
16	0
17	1
18	0
19	0
20	0
21	1
22	0
23	1
24	2
25	1
26	0
27	0
28	1
29	0
30	1
31	0
32	0
33	0
34	0
35	0
36	1
37	0
38	1
39	3
40	0
41	1
42	0
43	0
44	0
45	1
46	0
47	1
48	0
49	2
50	0
51	0
52	0
53	0
54	0
55	1
56	0
57	1
58	6
59	0
60	0
61	1
62	0
63	0
64	0
65	0
66	1
67	0
68	1
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	1
79	0
80	1
81	11
82	4
83	2
84	0
85	1
86	0
87	0
88	0
89	0
90	0
91	1
92	0
93	1
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0
102	0
103	0
104	0
105	1
106	0
107	1
108	23
109	0
110	0
111	0
112	0
113	1
114	0
115	0
116	0
117	0
118	0
119	0
120	1

[1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 2, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 3, 0, 1, 0, 0, 0, 1, 0, 1, 0, 2, 0, 0, 0, 0, 0, 1, 0, 1, 6, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 11, 4, 2, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 23, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1]

cp's OEIS Frontend

A298426 Regular triangle where T(n,k) is number of k-ary rooted trees with n nodes.

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	0
10	1
11	0
12	1
13	1
14	0
15	1
16	0
17	1
18	0
19	0
20	0
21	1
22	0
23	1
24	2
25	1
26	0
27	0
28	1
29	0
30	1
31	0
32	0
33	0
34	0
35	0
36	1
37	0
38	1
39	3
40	0
41	1
42	0
43	0
44	0
45	1
46	0
47	1
48	0
49	2
50	0
51	0
52	0
53	0
54	0
55	1
56	0
57	1
58	6
59	0
60	0
61	1
62	0
63	0
64	0
65	0
66	1
67	0
68	1
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	1
79	0
80	1
81	11
82	4
83	2
84	0
85	1
86	0
87	0
88	0
89	0
90	0
91	1
92	0
93	1
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0
102	0
103	0
104	0
105	1
106	0
107	1
108	23
109	0
110	0
111	0
112	0
113	1
114	0
115	0
116	0
117	0
118	0
119	0
120	1

n	a(n)
1	1
2	0
3	1
4	0
5	1
6	1
7	0
8	1
9	0
10	1
11	0
12	1
13	1
14	0
15	1
16	0
17	1
18	0
19	0
20	0
21	1
22	0
23	1
24	2
25	1
26	0
27	0
28	1
29	0
30	1
31	0
32	0
33	0
34	0
35	0
36	1
37	0
38	1
39	3
40	0
41	1
42	0
43	0
44	0
45	1
46	0
47	1
48	0
49	2
50	0
51	0
52	0
53	0
54	0
55	1
56	0
57	1
58	6
59	0
60	0
61	1
62	0
63	0
64	0
65	0
66	1
67	0
68	1
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	1
79	0
80	1
81	11
82	4
83	2
84	0
85	1
86	0
87	0
88	0
89	0
90	0
91	1
92	0
93	1
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0
102	0
103	0
104	0
105	1
106	0
107	1
108	23
109	0
110	0
111	0
112	0
113	1
114	0
115	0
116	0
117	0
118	0
119	0
120	1

n	a(n)
1	1
2	0
3	1
4	0
5	1
6	1
7	0
8	1
9	0
10	1
11	0
12	1
13	1
14	0
15	1
16	0
17	1
18	0
19	0
20	0
21	1
22	0
23	1
24	2
25	1
26	0
27	0
28	1
29	0
30	1
31	0
32	0
33	0
34	0
35	0
36	1
37	0
38	1
39	3
40	0
41	1
42	0
43	0
44	0
45	1
46	0
47	1
48	0
49	2
50	0
51	0
52	0
53	0
54	0
55	1
56	0
57	1
58	6
59	0
60	0
61	1
62	0
63	0
64	0
65	0
66	1
67	0
68	1
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	1
79	0
80	1
81	11
82	4
83	2
84	0
85	1
86	0
87	0
88	0
89	0
90	0
91	1
92	0
93	1
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0
102	0
103	0
104	0
105	1
106	0
107	1
108	23
109	0
110	0
111	0
112	0
113	1
114	0
115	0
116	0
117	0
118	0
119	0
120	1