A066330 - cp's OEIS frontend

A066330 Binary string which equals n when 1's, 2's, 4's and 8's bits have weights 1, 2, 4, 5 respectively, while the other bits have their usual weights. -1 if no such string exists.

n	a(n)
0	0
1	1
2	10
3	11
4	100
5	1000
6	1001
7	1010
8	1011
9	1100
10	1101
11	1110
12	1111
13	-1
14	-1
15	-1
16	10000
17	10001
18	10010
19	10011
20	10100
21	11000
22	11001
23	11010
24	11011
25	11100
26	11101
27	11110
28	11111
29	-1
30	-1
31	-1
32	100000
33	100001
34	100010
35	100011
36	100100
37	101000
38	101001
39	101010
40	101011
41	101100
42	101101
43	101110
44	101111
45	-1
46	-1
47	-1

[0, 1, 10, 11, 100, 1000, 1001, 1010, 1011, 1100, 1101, 1110, 1111, -1, -1, -1, 10000, 10001, 10010, 10011, 10100, 11000, 11001, 11010, 11011, 11100, 11101, 11110, 11111, -1, -1, -1, 100000, 100001, 100010, 100011, 100100, 101000, 101001, 101010, 101011, 101100, 101101, 101110, 101111, -1, -1, -1]

cp's OEIS Frontend

A066330 Binary string which equals n when 1's, 2's, 4's and 8's bits have weights 1, 2, 4, 5 respectively, while the other bits have their usual weights. -1 if no such string exists.

Table of values

List of values