A086793 - cp's OEIS frontend

A086793 Number of iterations of the map A034690 (x -> sum of digits of all divisors of x) required to reach one of the fixed points, 15 or 1.

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

[0, 5, 4, 3, 9, 8, 2, 1, 11, 12, 5, 7, 10, 1, 0, 13, 12, 15, 6, 1, 2, 12, 9, 9, 11, 1, 13, 9, 8, 14, 10, 14, 8, 16, 3, 17, 6, 10, 2, 14, 9, 9, 2, 3, 9, 16, 8, 3, 3, 3, 16, 2, 12, 4, 16, 4, 2, 14, 1, 10, 2, 1, 15, 7, 3, 18, 2, 18, 10, 18, 12, 11, 6, 10, 17, 10, 10, 17, 13, 10, 11, 16, 8, 2, 14, 10, 15]

cp's OEIS Frontend

A086793 Number of iterations of the map A034690 (x -> sum of digits of all divisors of x) required to reach one of the fixed points, 15 or 1.

Table of values

List of values

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

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

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