A083514 - cp's OEIS frontend

A083514 Number of steps for iteration of map x -> (4/3)*ceiling(x) to reach an integer > 3n+1 when started at 3n+1, or -1 if no such integer is ever reached.

n	a(n)
0	3
1	2
2	8
3	7
4	2
5	3
6	5
7	2
8	6
9	3
10	2
11	5
12	4
13	2
14	3
15	4
16	2
17	4
18	3
19	2
20	4
21	9
22	2
23	3
24	5
25	2
26	6
27	3
28	2
29	5
30	5
31	2
32	3
33	6
34	2
35	5
36	3
37	2
38	7
39	4
40	2
41	3
42	4
43	2
44	4
45	3
46	2
47	4
48	5
49	2
50	3
51	6
52	2
53	5
54	3
55	2
56	8
57	8
58	2
59	3
60	7
61	2
62	7
63	3
64	2
65	6
66	4
67	2
68	3
69	4
70	2
71	4
72	3
73	2
74	4
75	7
76	2
77	3
78	8
79	2
80	8
81	3
82	2
83	6
84	6
85	2
86	3
87	5
88	2
89	8
90	3
91	2
92	5
93	4
94	2
95	3
96	4
97	2
98	4
99	3
100	2
101	4
102	6
103	2
104	3

[3, 2, 8, 7, 2, 3, 5, 2, 6, 3, 2, 5, 4, 2, 3, 4, 2, 4, 3, 2, 4, 9, 2, 3, 5, 2, 6, 3, 2, 5, 5, 2, 3, 6, 2, 5, 3, 2, 7, 4, 2, 3, 4, 2, 4, 3, 2, 4, 5, 2, 3, 6, 2, 5, 3, 2, 8, 8, 2, 3, 7, 2, 7, 3, 2, 6, 4, 2, 3, 4, 2, 4, 3, 2, 4, 7, 2, 3, 8, 2, 8, 3, 2, 6, 6, 2, 3, 5, 2, 8, 3, 2, 5, 4, 2, 3, 4, 2, 4, 3, 2, 4, 6, 2, 3]

cp's OEIS Frontend

A083514 Number of steps for iteration of map x -> (4/3)*ceiling(x) to reach an integer > 3n+1 when started at 3n+1, or -1 if no such integer is ever reached.

Table of values

List of values

n	a(n)
0	3
1	2
2	8
3	7
4	2
5	3
6	5
7	2
8	6
9	3
10	2
11	5
12	4
13	2
14	3
15	4
16	2
17	4
18	3
19	2
20	4
21	9
22	2
23	3
24	5
25	2
26	6
27	3
28	2
29	5
30	5
31	2
32	3
33	6
34	2
35	5
36	3
37	2
38	7
39	4
40	2
41	3
42	4
43	2
44	4
45	3
46	2
47	4
48	5
49	2
50	3
51	6
52	2
53	5
54	3
55	2
56	8
57	8
58	2
59	3
60	7
61	2
62	7
63	3
64	2
65	6
66	4
67	2
68	3
69	4
70	2
71	4
72	3
73	2
74	4
75	7
76	2
77	3
78	8
79	2
80	8
81	3
82	2
83	6
84	6
85	2
86	3
87	5
88	2
89	8
90	3
91	2
92	5
93	4
94	2
95	3
96	4
97	2
98	4
99	3
100	2
101	4
102	6
103	2
104	3

n	a(n)
0	3
1	2
2	8
3	7
4	2
5	3
6	5
7	2
8	6
9	3
10	2
11	5
12	4
13	2
14	3
15	4
16	2
17	4
18	3
19	2
20	4
21	9
22	2
23	3
24	5
25	2
26	6
27	3
28	2
29	5
30	5
31	2
32	3
33	6
34	2
35	5
36	3
37	2
38	7
39	4
40	2
41	3
42	4
43	2
44	4
45	3
46	2
47	4
48	5
49	2
50	3
51	6
52	2
53	5
54	3
55	2
56	8
57	8
58	2
59	3
60	7
61	2
62	7
63	3
64	2
65	6
66	4
67	2
68	3
69	4
70	2
71	4
72	3
73	2
74	4
75	7
76	2
77	3
78	8
79	2
80	8
81	3
82	2
83	6
84	6
85	2
86	3
87	5
88	2
89	8
90	3
91	2
92	5
93	4
94	2
95	3
96	4
97	2
98	4
99	3
100	2
101	4
102	6
103	2
104	3

n	a(n)
0	3
1	2
2	8
3	7
4	2
5	3
6	5
7	2
8	6
9	3
10	2
11	5
12	4
13	2
14	3
15	4
16	2
17	4
18	3
19	2
20	4
21	9
22	2
23	3
24	5
25	2
26	6
27	3
28	2
29	5
30	5
31	2
32	3
33	6
34	2
35	5
36	3
37	2
38	7
39	4
40	2
41	3
42	4
43	2
44	4
45	3
46	2
47	4
48	5
49	2
50	3
51	6
52	2
53	5
54	3
55	2
56	8
57	8
58	2
59	3
60	7
61	2
62	7
63	3
64	2
65	6
66	4
67	2
68	3
69	4
70	2
71	4
72	3
73	2
74	4
75	7
76	2
77	3
78	8
79	2
80	8
81	3
82	2
83	6
84	6
85	2
86	3
87	5
88	2
89	8
90	3
91	2
92	5
93	4
94	2
95	3
96	4
97	2
98	4
99	3
100	2
101	4
102	6
103	2
104	3