A323831 - cp's OEIS frontend

A323831 a(0) = 5; thereafter a(n) is obtained by doubling a(n-1) and repeatedly deleting any string of identical digits.

n	a(n)
0	5
1	10
2	20
3	40
4	80
5	160
6	320
7	640
8	1280
9	2560
10	5120
11	10240
12	20480
13	40960
14	81920
15	163840
16	327680
17	6360
18	12720
19	250
20	5
21	10
22	20
23	40
24	80
25	160
26	320
27	640
28	1280
29	2560
30	5120
31	10240
32	20480
33	40960
34	81920
35	163840
36	327680
37	6360
38	12720
39	250

[5, 10, 20, 40, 80, 160, 320, 640, 1280, 2560, 5120, 10240, 20480, 40960, 81920, 163840, 327680, 6360, 12720, 250, 5, 10, 20, 40, 80, 160, 320, 640, 1280, 2560, 5120, 10240, 20480, 40960, 81920, 163840, 327680, 6360, 12720, 250]

cp's OEIS Frontend

A323831 a(0) = 5; thereafter a(n) is obtained by doubling a(n-1) and repeatedly deleting any string of identical digits.

Table of values

List of values