A050004 - cp's OEIS frontend

A050004 a(n) = floor(a(n-1)/2) if this is not among 0, a(1), ..., a(n-2); otherwise a(n) = 5*a(n-1).

n	a(n)
1	1
2	5
3	2
4	10
5	50
6	25
7	12
8	6
9	3
10	15
11	7
12	35
13	17
14	8
15	4
16	20
17	100
18	500
19	250
20	125
21	62
22	31
23	155
24	77
25	38
26	19
27	9
28	45
29	22
30	11
31	55
32	27
33	13
34	65
35	32
36	16
37	80
38	40
39	200
40	1000
41	5000
42	2500
43	1250
44	625
45	312
46	156
47	78
48	39
49	195
50	97
51	48
52	24
53	120
54	60
55	30
56	150

[1, 5, 2, 10, 50, 25, 12, 6, 3, 15, 7, 35, 17, 8, 4, 20, 100, 500, 250, 125, 62, 31, 155, 77, 38, 19, 9, 45, 22, 11, 55, 27, 13, 65, 32, 16, 80, 40, 200, 1000, 5000, 2500, 1250, 625, 312, 156, 78, 39, 195, 97, 48, 24, 120, 60, 30, 150]

cp's OEIS Frontend

A050004 a(n) = floor(a(n-1)/2) if this is not among 0, a(1), ..., a(n-2); otherwise a(n) = 5*a(n-1).

Table of values

List of values