A101440 - cp's OEIS frontend

A101440 Replace each digit of n with 1 followed by n 0's: 0 -> 1, 1 -> 10, 2 -> 100, ..., 9 -> 1000000000, 10 -> 101, 11 -> 1010, 12 -> 10100, etc. Expanded number is then converted from binary to decimal: 0 -> 1 -> 1, 1 -> 10 -> 2, 2 -> 100 -> 4, 9 -> 1000000000 -> 512, 10 -> 101 -> 5, etc.

n	a(n)
0	1
1	2
2	4
3	8
4	16
5	32
6	64
7	128
8	256
9	512
10	5
11	10
12	20
13	40
14	80
15	160
16	320
17	640
18	1280
19	2560
20	9
21	18
22	36
23	72
24	144
25	288
26	576
27	1152
28	2304
29	4608
30	17
31	34
32	68
33	136
34	272
35	544
36	1088
37	2176
38	4352
39	8704
40	33
41	66
42	132
43	264
44	528
45	1056
46	2112
47	4224
48	8448
49	16896
50	65
51	130
52	260
53	520
54	1040

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 5, 10, 20, 40, 80, 160, 320, 640, 1280, 2560, 9, 18, 36, 72, 144, 288, 576, 1152, 2304, 4608, 17, 34, 68, 136, 272, 544, 1088, 2176, 4352, 8704, 33, 66, 132, 264, 528, 1056, 2112, 4224, 8448, 16896, 65, 130, 260, 520, 1040]

cp's OEIS Frontend

A101440 Replace each digit of n with 1 followed by n 0's: 0 -> 1, 1 -> 10, 2 -> 100, ..., 9 -> 1000000000, 10 -> 101, 11 -> 1010, 12 -> 10100, etc. Expanded number is then converted from binary to decimal: 0 -> 1 -> 1, 1 -> 10 -> 2, 2 -> 100 -> 4, 9 -> 1000000000 -> 512, 10 -> 101 -> 5, etc.

Table of values

List of values