A118511 - cp's OEIS frontend

A118511 Define sequence S_n by: initial term = n, reverse digits and add 1 to get next term. It is conjectured that S_n always reaches a cycle of length 9, as in A117230. Sequence gives number of steps for S_n to reach the cycle.

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

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

cp's OEIS Frontend

A118511 Define sequence S_n by: initial term = n, reverse digits and add 1 to get next term. It is conjectured that S_n always reaches a cycle of length 9, as in A117230. Sequence gives number of steps for S_n to reach the cycle.

Table of values

List of values

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

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

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