A117816 - cp's OEIS frontend

A117816 Number of steps until the RADD sequence T(k+1) = n + R(T(k)), T(0) = 1, enters a cycle; -1 if no cycle is ever reached. (R=A004086: reverse digits).

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	-1
11	1
12	2
13	31
14	15
15	-1
16	721
17	9
18	1
19	6
20	-1
21	3
22	5
23	28
24	29
25	131
26	23
27	1
28	31
29	6
30	-1
31	1
32	19
33	1
34	53
35	4
36	406
37	34
38	254
39	8
40	-1
41	3
42	245
43	1
44	3
45	2
46	422
47	42
48	308
49	1
50	-1
51	2
52	2
53	49
54	1
55	1371
56	13
57	1
58	1
59	2
60	-1
61	78
62	65
63	1
64	809
65	1575
66	5
67	43
68	31
69	2
70	-1
71	33
72	2
73	21
74	192
75	857
76	91
77	1
78	2
79	2
80	-1
81	2
82	491
83	1
84	2
85	1
86	81
87	49
88	1
89	2
90	-1
91	35
92	197
93	72
94	1
95	12
96	79
97	1
98	6004
99	1
100	-1
101	52
102	10264
103	9
104	28
105	2
106	2
107	1
108	427
109	1
110	-1
111	1
112	1
113	49
114	167

[1, 1, 1, 1, 1, 1, 1, 1, 1, -1, 1, 2, 31, 15, -1, 721, 9, 1, 6, -1, 3, 5, 28, 29, 131, 23, 1, 31, 6, -1, 1, 19, 1, 53, 4, 406, 34, 254, 8, -1, 3, 245, 1, 3, 2, 422, 42, 308, 1, -1, 2, 2, 49, 1, 1371, 13, 1, 1, 2, -1, 78, 65, 1, 809, 1575, 5, 43, 31, 2, -1, 33, 2, 21, 192, 857, 91, 1, 2, 2, -1, 2, 491, 1, 2, 1, 81, 49, 1, 2, -1, 35, 197, 72, 1, 12, 79, 1, 6004, 1, -1, 52, 10264, 9, 28, 2, 2, 1, 427, 1, -1, 1, 1, 49, 167]

cp's OEIS Frontend

A117816 Number of steps until the RADD sequence T(k+1) = n + R(T(k)), T(0) = 1, enters a cycle; -1 if no cycle is ever reached. (R=A004086: reverse digits).

Table of values

List of values