A347381 - cp's OEIS frontend

A347381 Distance from n to the nearest common ancestor of n and sigma(n) in the Doudna-tree (A005940).

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

[0, 0, 1, 1, 1, 0, 3, 2, 2, 3, 3, 2, 2, 3, 1, 3, 6, 3, 5, 1, 4, 5, 7, 2, 3, 4, 3, 0, 8, 4, 10, 4, 4, 7, 2, 4, 4, 7, 3, 4, 10, 4, 9, 4, 3, 9, 13, 4, 4, 4, 7, 7, 15, 4, 5, 5, 6, 9, 15, 4, 7, 10, 3, 5, 4, 6, 12, 6, 8, 5, 19, 5, 9, 6, 4, 8, 3, 5, 19, 4, 3, 11, 20, 4, 7, 11, 9, 6, 22, 4, 4, 8, 11, 15, 7, 5, 24, 5, 3, 5, 20]

cp's OEIS Frontend

A347381 Distance from n to the nearest common ancestor of n and sigma(n) in the Doudna-tree (A005940).

Table of values

List of values

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

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

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