A365367 - cp's OEIS frontend

A365367 Number of steps for iteration of map x -> (5/3)*round(x) to reach an integer > n when started at n, or -1 if no such integer is ever reached.

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

[3, 2, 1, 3, 15, 1, 2, 14, 1, 5, 2, 1, 13, 4, 1, 2, 4, 1, 5, 2, 1, 12, 3, 1, 2, 3, 1, 3, 2, 1, 3, 4, 1, 2, 4, 1, 11, 2, 1, 5, 6, 1, 2, 8, 1, 4, 2, 1, 4, 3, 1, 2, 3, 1, 3, 2, 1, 3, 5, 1, 2, 10, 1, 4, 2, 1, 4, 5, 1, 2, 6, 1, 7, 2, 1, 5, 3, 1, 2, 3, 1, 3, 2, 1, 3]

cp's OEIS Frontend

A365367 Number of steps for iteration of map x -> (5/3)*round(x) to reach an integer > n when started at n, or -1 if no such integer is ever reached.

Table of values

List of values

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

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

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