A053985 - cp's OEIS frontend

A053985 Replace 2^k with (-2)^k in binary expansion of n.

n	a(n)
0	0
1	1
2	-2
3	-1
4	4
5	5
6	2
7	3
8	-8
9	-7
10	-10
11	-9
12	-4
13	-3
14	-6
15	-5
16	16
17	17
18	14
19	15
20	20
21	21
22	18
23	19
24	8
25	9
26	6
27	7
28	12
29	13
30	10
31	11
32	-32
33	-31
34	-34
35	-33
36	-28
37	-27
38	-30
39	-29
40	-40
41	-39
42	-42
43	-41
44	-36
45	-35
46	-38
47	-37
48	-16
49	-15
50	-18
51	-17
52	-12
53	-11
54	-14
55	-13
56	-24
57	-23
58	-26
59	-25
60	-20
61	-19

[0, 1, -2, -1, 4, 5, 2, 3, -8, -7, -10, -9, -4, -3, -6, -5, 16, 17, 14, 15, 20, 21, 18, 19, 8, 9, 6, 7, 12, 13, 10, 11, -32, -31, -34, -33, -28, -27, -30, -29, -40, -39, -42, -41, -36, -35, -38, -37, -16, -15, -18, -17, -12, -11, -14, -13, -24, -23, -26, -25, -20, -19]

cp's OEIS Frontend

A053985 Replace 2^k with (-2)^k in binary expansion of n.

Table of values

List of values

n	a(n)
0	0
1	1
2	-2
3	-1
4	4
5	5
6	2
7	3
8	-8
9	-7
10	-10
11	-9
12	-4
13	-3
14	-6
15	-5
16	16
17	17
18	14
19	15
20	20
21	21
22	18
23	19
24	8
25	9
26	6
27	7
28	12
29	13
30	10
31	11
32	-32
33	-31
34	-34
35	-33
36	-28
37	-27
38	-30
39	-29
40	-40
41	-39
42	-42
43	-41
44	-36
45	-35
46	-38
47	-37
48	-16
49	-15
50	-18
51	-17
52	-12
53	-11
54	-14
55	-13
56	-24
57	-23
58	-26
59	-25
60	-20
61	-19

n	a(n)
0	0
1	1
2	-2
3	-1
4	4
5	5
6	2
7	3
8	-8
9	-7
10	-10
11	-9
12	-4
13	-3
14	-6
15	-5
16	16
17	17
18	14
19	15
20	20
21	21
22	18
23	19
24	8
25	9
26	6
27	7
28	12
29	13
30	10
31	11
32	-32
33	-31
34	-34
35	-33
36	-28
37	-27
38	-30
39	-29
40	-40
41	-39
42	-42
43	-41
44	-36
45	-35
46	-38
47	-37
48	-16
49	-15
50	-18
51	-17
52	-12
53	-11
54	-14
55	-13
56	-24
57	-23
58	-26
59	-25
60	-20
61	-19

n	a(n)
0	0
1	1
2	-2
3	-1
4	4
5	5
6	2
7	3
8	-8
9	-7
10	-10
11	-9
12	-4
13	-3
14	-6
15	-5
16	16
17	17
18	14
19	15
20	20
21	21
22	18
23	19
24	8
25	9
26	6
27	7
28	12
29	13
30	10
31	11
32	-32
33	-31
34	-34
35	-33
36	-28
37	-27
38	-30
39	-29
40	-40
41	-39
42	-42
43	-41
44	-36
45	-35
46	-38
47	-37
48	-16
49	-15
50	-18
51	-17
52	-12
53	-11
54	-14
55	-13
56	-24
57	-23
58	-26
59	-25
60	-20
61	-19