A118878 - cp's OEIS frontend

A118878 Let T(S,Q) be the sequence obtaining by starting with S and repeatedly reversing the digits and adding Q to get the next term. a(n) is the number of steps for T(n,5) to reach a cycle, or -1 if no cycle is ever reached.

n	a(n)
1	1
2	190
3	1
4	87
5	1
6	0
7	189
8	0
9	86
10	0
11	0
12	188
13	0
14	85
15	191
16	0
17	0
18	95
19	0
20	190
21	1
22	0
23	184
24	0
25	3
26	187
27	0
28	0
29	91
30	0
31	96
32	0
33	0
34	180
35	88
36	0
37	183
38	0
39	0
40	87
41	1
42	92
43	0
44	0
45	3
46	84
47	0
48	179
49	0
50	0
51	191
52	0
53	88
54	0
55	2
56	190
57	2
58	87
59	2
60	1
61	2
62	97
63	2
64	192
65	3
66	0
67	186
68	0
69	83
70	189
71	0
72	0
73	93
74	0
75	98
76	0
77	0
78	182
79	0
80	1
81	185
82	0
83	0
84	89
85	3
86	94
87	0
88	0
89	178
90	86
91	0
92	181
93	0
94	0
95	193
96	0
97	90
98	0
99	0
100	1

[1, 190, 1, 87, 1, 0, 189, 0, 86, 0, 0, 188, 0, 85, 191, 0, 0, 95, 0, 190, 1, 0, 184, 0, 3, 187, 0, 0, 91, 0, 96, 0, 0, 180, 88, 0, 183, 0, 0, 87, 1, 92, 0, 0, 3, 84, 0, 179, 0, 0, 191, 0, 88, 0, 2, 190, 2, 87, 2, 1, 2, 97, 2, 192, 3, 0, 186, 0, 83, 189, 0, 0, 93, 0, 98, 0, 0, 182, 0, 1, 185, 0, 0, 89, 3, 94, 0, 0, 178, 86, 0, 181, 0, 0, 193, 0, 90, 0, 0, 1]

cp's OEIS Frontend

A118878 Let T(S,Q) be the sequence obtaining by starting with S and repeatedly reversing the digits and adding Q to get the next term. a(n) is the number of steps for T(n,5) to reach a cycle, or -1 if no cycle is ever reached.

Table of values

List of values

n	a(n)
1	1
2	190
3	1
4	87
5	1
6	0
7	189
8	0
9	86
10	0
11	0
12	188
13	0
14	85
15	191
16	0
17	0
18	95
19	0
20	190
21	1
22	0
23	184
24	0
25	3
26	187
27	0
28	0
29	91
30	0
31	96
32	0
33	0
34	180
35	88
36	0
37	183
38	0
39	0
40	87
41	1
42	92
43	0
44	0
45	3
46	84
47	0
48	179
49	0
50	0
51	191
52	0
53	88
54	0
55	2
56	190
57	2
58	87
59	2
60	1
61	2
62	97
63	2
64	192
65	3
66	0
67	186
68	0
69	83
70	189
71	0
72	0
73	93
74	0
75	98
76	0
77	0
78	182
79	0
80	1
81	185
82	0
83	0
84	89
85	3
86	94
87	0
88	0
89	178
90	86
91	0
92	181
93	0
94	0
95	193
96	0
97	90
98	0
99	0
100	1

n	a(n)
1	1
2	190
3	1
4	87
5	1
6	0
7	189
8	0
9	86
10	0
11	0
12	188
13	0
14	85
15	191
16	0
17	0
18	95
19	0
20	190
21	1
22	0
23	184
24	0
25	3
26	187
27	0
28	0
29	91
30	0
31	96
32	0
33	0
34	180
35	88
36	0
37	183
38	0
39	0
40	87
41	1
42	92
43	0
44	0
45	3
46	84
47	0
48	179
49	0
50	0
51	191
52	0
53	88
54	0
55	2
56	190
57	2
58	87
59	2
60	1
61	2
62	97
63	2
64	192
65	3
66	0
67	186
68	0
69	83
70	189
71	0
72	0
73	93
74	0
75	98
76	0
77	0
78	182
79	0
80	1
81	185
82	0
83	0
84	89
85	3
86	94
87	0
88	0
89	178
90	86
91	0
92	181
93	0
94	0
95	193
96	0
97	90
98	0
99	0
100	1

n	a(n)
1	1
2	190
3	1
4	87
5	1
6	0
7	189
8	0
9	86
10	0
11	0
12	188
13	0
14	85
15	191
16	0
17	0
18	95
19	0
20	190
21	1
22	0
23	184
24	0
25	3
26	187
27	0
28	0
29	91
30	0
31	96
32	0
33	0
34	180
35	88
36	0
37	183
38	0
39	0
40	87
41	1
42	92
43	0
44	0
45	3
46	84
47	0
48	179
49	0
50	0
51	191
52	0
53	88
54	0
55	2
56	190
57	2
58	87
59	2
60	1
61	2
62	97
63	2
64	192
65	3
66	0
67	186
68	0
69	83
70	189
71	0
72	0
73	93
74	0
75	98
76	0
77	0
78	182
79	0
80	1
81	185
82	0
83	0
84	89
85	3
86	94
87	0
88	0
89	178
90	86
91	0
92	181
93	0
94	0
95	193
96	0
97	90
98	0
99	0
100	1