A087708 - cp's OEIS frontend

A087708 First integer > n reached under iteration of map x -> (5/3)*ceiling(x) when started at n, or -1 if no such integer is ever reached.

n	a(n)
1	20
2	20
3	5
4	20
5	15
6	10
7	20
8	40
9	15
10	1770
11	90
12	20
13	290
14	40
15	25
16	45
17	1770
18	30
19	90
20	95
21	35
22	290
23	65
24	40
25	70
26	345
27	45
28	220
29	1770
30	50
31	145
32	90
33	55
34	95
35	165
36	60
37	290
38	17845
39	65
40	520
41	115
42	70
43	120
44	345
45	75
46	215
47	220
48	80
49	1770
50	140
51	85
52	145
53	415
54	90
55	715
56	1215
57	95
58	270
59	165
60	100
61	170

[20, 20, 5, 20, 15, 10, 20, 40, 15, 1770, 90, 20, 290, 40, 25, 45, 1770, 30, 90, 95, 35, 290, 65, 40, 70, 345, 45, 220, 1770, 50, 145, 90, 55, 95, 165, 60, 290, 17845, 65, 520, 115, 70, 120, 345, 75, 215, 220, 80, 1770, 140, 85, 145, 415, 90, 715, 1215, 95, 270, 165, 100, 170]

cp's OEIS Frontend

A087708 First integer > n reached under iteration of map x -> (5/3)*ceiling(x) when started at n, or -1 if no such integer is ever reached.

Table of values

List of values