A066327 - cp's OEIS frontend

A066327 Binary string which equals n when 1's, 2's, 4's and 8's bits have weights -1, 1, 3, 6 respectively, while the other bits have their usual weights. -1 if no such string exists.

n	a(n)
0	0
1	10
2	101
3	100
4	110
5	1001
6	1000
7	1010
8	1101
9	1100
10	1110
11	-1
12	-1
13	-1
14	-1
15	10001
16	10000
17	10010
18	10101
19	10100
20	10110
21	11001
22	11000
23	11010
24	11101
25	11100
26	11110
27	-1
28	-1
29	-1
30	-1
31	100001
32	100000
33	100010
34	100101
35	100100
36	100110
37	101001
38	101000
39	101010
40	101101
41	101100
42	101110
43	-1
44	-1
45	-1
46	-1
47	110001

[0, 10, 101, 100, 110, 1001, 1000, 1010, 1101, 1100, 1110, -1, -1, -1, -1, 10001, 10000, 10010, 10101, 10100, 10110, 11001, 11000, 11010, 11101, 11100, 11110, -1, -1, -1, -1, 100001, 100000, 100010, 100101, 100100, 100110, 101001, 101000, 101010, 101101, 101100, 101110, -1, -1, -1, -1, 110001]

cp's OEIS Frontend

A066327 Binary string which equals n when 1's, 2's, 4's and 8's bits have weights -1, 1, 3, 6 respectively, while the other bits have their usual weights. -1 if no such string exists.

Table of values

List of values