A075167 - cp's OEIS frontend

A075167 Number of edges in each rooted plane tree produced with the unranking algorithm presented in A075166, which is based on prime factorization.

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

[0, 1, 2, 2, 3, 3, 4, 3, 3, 4, 5, 4, 6, 5, 4, 3, 7, 4, 8, 5, 5, 6, 9, 4, 4, 7, 4, 6, 10, 5, 11, 4, 6, 8, 5, 5, 12, 9, 7, 5, 13, 6, 14, 7, 5, 10, 15, 5, 5, 5, 8, 8, 16, 5, 6, 6, 9, 11, 17, 6, 18, 12, 6, 4, 7, 7, 19, 9, 10, 6, 20, 5, 21, 13, 5, 10, 6, 8, 22, 6, 4, 14, 23, 7, 8, 15, 11, 7, 24, 6, 7, 11]

cp's OEIS Frontend

A075167 Number of edges in each rooted plane tree produced with the unranking algorithm presented in A075166, which is based on prime factorization.

Table of values

List of values

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

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

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