A075102 - cp's OEIS frontend

A075102 Number of steps to reach the first integer starting with 2^n/n and iterating the map x->x*ceiling(x), or -1 if no integer is ever reached.

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	5
7	5
8	0
9	2
10	4
11	1
12	1
13	13
14	12
15	3
16	0
17	19
18	3
19	4
20	8
21	10
22	11
23	20
24	1
25	7
26	1
27	3
28	8
29	12
30	1
31	2
32	0
33	20
34	6
35	4
36	7
37	8
38	23
39	39
40	1
41	21
42	8
43	13
44	16
45	4
46	1
47	9
48	7
49	1
50	6
51	23
52	30
53	73
54	6
55	3
56	14
57	7
58	7
59	20
60	12
61	228
62	16
63	3
64	0
65	10
66	5
67	96
68	3
69	4
70	13
71	28
72	3
73	72
74	57
75	7
76	9
77	6
78	6

[0, 0, 1, 0, 2, 5, 5, 0, 2, 4, 1, 1, 13, 12, 3, 0, 19, 3, 4, 8, 10, 11, 20, 1, 7, 1, 3, 8, 12, 1, 2, 0, 20, 6, 4, 7, 8, 23, 39, 1, 21, 8, 13, 16, 4, 1, 9, 7, 1, 6, 23, 30, 73, 6, 3, 14, 7, 7, 20, 12, 228, 16, 3, 0, 10, 5, 96, 3, 4, 13, 28, 3, 72, 57, 7, 9, 6, 6]

cp's OEIS Frontend

A075102 Number of steps to reach the first integer starting with 2^n/n and iterating the map x->x*ceiling(x), or -1 if no integer is ever reached.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	5
7	5
8	0
9	2
10	4
11	1
12	1
13	13
14	12
15	3
16	0
17	19
18	3
19	4
20	8
21	10
22	11
23	20
24	1
25	7
26	1
27	3
28	8
29	12
30	1
31	2
32	0
33	20
34	6
35	4
36	7
37	8
38	23
39	39
40	1
41	21
42	8
43	13
44	16
45	4
46	1
47	9
48	7
49	1
50	6
51	23
52	30
53	73
54	6
55	3
56	14
57	7
58	7
59	20
60	12
61	228
62	16
63	3
64	0
65	10
66	5
67	96
68	3
69	4
70	13
71	28
72	3
73	72
74	57
75	7
76	9
77	6
78	6

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	5
7	5
8	0
9	2
10	4
11	1
12	1
13	13
14	12
15	3
16	0
17	19
18	3
19	4
20	8
21	10
22	11
23	20
24	1
25	7
26	1
27	3
28	8
29	12
30	1
31	2
32	0
33	20
34	6
35	4
36	7
37	8
38	23
39	39
40	1
41	21
42	8
43	13
44	16
45	4
46	1
47	9
48	7
49	1
50	6
51	23
52	30
53	73
54	6
55	3
56	14
57	7
58	7
59	20
60	12
61	228
62	16
63	3
64	0
65	10
66	5
67	96
68	3
69	4
70	13
71	28
72	3
73	72
74	57
75	7
76	9
77	6
78	6

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	5
7	5
8	0
9	2
10	4
11	1
12	1
13	13
14	12
15	3
16	0
17	19
18	3
19	4
20	8
21	10
22	11
23	20
24	1
25	7
26	1
27	3
28	8
29	12
30	1
31	2
32	0
33	20
34	6
35	4
36	7
37	8
38	23
39	39
40	1
41	21
42	8
43	13
44	16
45	4
46	1
47	9
48	7
49	1
50	6
51	23
52	30
53	73
54	6
55	3
56	14
57	7
58	7
59	20
60	12
61	228
62	16
63	3
64	0
65	10
66	5
67	96
68	3
69	4
70	13
71	28
72	3
73	72
74	57
75	7
76	9
77	6
78	6