A206499 - cp's OEIS frontend

A206499 The sum of the distances between all unordered pairs of branch vertices in the rooted tree with Matula-Goebel number n. A branch vertex is a vertex of degree >=3.

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

[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 2, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 2, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 2, 1, 0, 0, 0, 0, 0, 4, 0, 0, 1]

cp's OEIS Frontend

A206499 The sum of the distances between all unordered pairs of branch vertices in the rooted tree with Matula-Goebel number n. A branch vertex is a vertex of degree >=3.

Table of values

List of values

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

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

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