A345971 - cp's OEIS frontend

A345971 Irregular triangle T(n,k) read by rows in which n-th row lists numbers of series-reduced trees realized by respective degree sequences in n-th row of A345970; n >= 4, 1 <= k <= A002865(n-2).

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

[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 2, 2, 1, 1, 1, 1, 2, 3, 1, 4, 1, 1, 1, 1, 1, 2, 3, 2, 2, 4, 6, 2, 1, 1, 1, 1, 1, 2, 3, 3, 2, 2, 4, 9, 4, 8, 1, 1, 1, 1, 1, 1, 2, 3, 3, 2, 2, 3, 1, 4, 9, 6, 9, 2, 8, 14, 4, 1, 1, 1, 1, 1, 1, 2, 3, 3, 3, 2, 3, 2, 2, 4, 9, 9, 9, 9, 4, 8, 25, 14, 15]

cp's OEIS Frontend

A345971 Irregular triangle T(n,k) read by rows in which n-th row lists numbers of series-reduced trees realized by respective degree sequences in n-th row of A345970; n >= 4, 1 <= k <= A002865(n-2).

Table of values

List of values

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

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

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