A302205 - cp's OEIS frontend

A302205 Let the binary expansion of n be [b_d, b_{d-1}, ..., b_3, b_2, b_1, b_0]_2, where (if n>0) b_d = 1, b_i = 0 or 1 for i To get a(n) concatenate the decimal numbers 2^(b_i) (if b_i = 1) or 0 (if b_i = 0).

n	a(n)
0	0
1	1
2	20
3	21
4	400
5	401
6	420
7	421
8	8000
9	8001
10	8020
11	8021
12	8400
13	8401
14	8420
15	8421
16	160000
17	160001
18	160020
19	160021
20	160400
21	160401
22	160420
23	160421
24	168000
25	168001
26	168020
27	168021
28	168400
29	168401
30	168420
31	168421
32	3200000
33	3200001
34	3200020
35	3200021
36	3200400
37	3200401
38	3200420
39	3200421
40	3208000
41	3208001
42	3208020
43	3208021
44	3208400
45	3208401
46	3208420
47	3208421
48	32160000

[0, 1, 20, 21, 400, 401, 420, 421, 8000, 8001, 8020, 8021, 8400, 8401, 8420, 8421, 160000, 160001, 160020, 160021, 160400, 160401, 160420, 160421, 168000, 168001, 168020, 168021, 168400, 168401, 168420, 168421, 3200000, 3200001, 3200020, 3200021, 3200400, 3200401, 3200420, 3200421, 3208000, 3208001, 3208020, 3208021, 3208400, 3208401, 3208420, 3208421, 32160000]

cp's OEIS Frontend

A302205 Let the binary expansion of n be [b_d, b_{d-1}, ..., b_3, b_2, b_1, b_0]_2, where (if n>0) b_d = 1, b_i = 0 or 1 for i To get a(n) concatenate the decimal numbers 2^(b_i) (if b_i = 1) or 0 (if b_i = 0).

Table of values

List of values