A065359 - cp's OEIS frontend

A065359 Alternating bit sum for n: replace 2^k with (-1)^k in binary expansion of n.

n	a(n)
0	0
1	1
2	-1
3	0
4	1
5	2
6	0
7	1
8	-1
9	0
10	-2
11	-1
12	0
13	1
14	-1
15	0
16	1
17	2
18	0
19	1
20	2
21	3
22	1
23	2
24	0
25	1
26	-1
27	0
28	1
29	2
30	0
31	1
32	-1
33	0
34	-2
35	-1
36	0
37	1
38	-1
39	0
40	-2
41	-1
42	-3
43	-2
44	-1
45	0
46	-2
47	-1
48	0
49	1
50	-1
51	0
52	1
53	2
54	0
55	1
56	-1
57	0
58	-2
59	-1
60	0
61	1
62	-1
63	0
64	1
65	2
66	0
67	1
68	2
69	3
70	1
71	2
72	0
73	1
74	-1
75	0
76	1
77	2
78	0
79	1
80	2
81	3
82	1
83	2
84	3
85	4
86	2
87	3
88	1
89	2
90	0
91	1
92	2
93	3
94	1
95	2
96	0
97	1
98	-1
99	0
100	1
101	2
102	0
103	1
104	-1
105	0
106	-2

[0, 1, -1, 0, 1, 2, 0, 1, -1, 0, -2, -1, 0, 1, -1, 0, 1, 2, 0, 1, 2, 3, 1, 2, 0, 1, -1, 0, 1, 2, 0, 1, -1, 0, -2, -1, 0, 1, -1, 0, -2, -1, -3, -2, -1, 0, -2, -1, 0, 1, -1, 0, 1, 2, 0, 1, -1, 0, -2, -1, 0, 1, -1, 0, 1, 2, 0, 1, 2, 3, 1, 2, 0, 1, -1, 0, 1, 2, 0, 1, 2, 3, 1, 2, 3, 4, 2, 3, 1, 2, 0, 1, 2, 3, 1, 2, 0, 1, -1, 0, 1, 2, 0, 1, -1, 0, -2]

cp's OEIS Frontend

A065359 Alternating bit sum for n: replace 2^k with (-1)^k in binary expansion of n.

Table of values

List of values

n	a(n)
0	0
1	1
2	-1
3	0
4	1
5	2
6	0
7	1
8	-1
9	0
10	-2
11	-1
12	0
13	1
14	-1
15	0
16	1
17	2
18	0
19	1
20	2
21	3
22	1
23	2
24	0
25	1
26	-1
27	0
28	1
29	2
30	0
31	1
32	-1
33	0
34	-2
35	-1
36	0
37	1
38	-1
39	0
40	-2
41	-1
42	-3
43	-2
44	-1
45	0
46	-2
47	-1
48	0
49	1
50	-1
51	0
52	1
53	2
54	0
55	1
56	-1
57	0
58	-2
59	-1
60	0
61	1
62	-1
63	0
64	1
65	2
66	0
67	1
68	2
69	3
70	1
71	2
72	0
73	1
74	-1
75	0
76	1
77	2
78	0
79	1
80	2
81	3
82	1
83	2
84	3
85	4
86	2
87	3
88	1
89	2
90	0
91	1
92	2
93	3
94	1
95	2
96	0
97	1
98	-1
99	0
100	1
101	2
102	0
103	1
104	-1
105	0
106	-2

n	a(n)
0	0
1	1
2	-1
3	0
4	1
5	2
6	0
7	1
8	-1
9	0
10	-2
11	-1
12	0
13	1
14	-1
15	0
16	1
17	2
18	0
19	1
20	2
21	3
22	1
23	2
24	0
25	1
26	-1
27	0
28	1
29	2
30	0
31	1
32	-1
33	0
34	-2
35	-1
36	0
37	1
38	-1
39	0
40	-2
41	-1
42	-3
43	-2
44	-1
45	0
46	-2
47	-1
48	0
49	1
50	-1
51	0
52	1
53	2
54	0
55	1
56	-1
57	0
58	-2
59	-1
60	0
61	1
62	-1
63	0
64	1
65	2
66	0
67	1
68	2
69	3
70	1
71	2
72	0
73	1
74	-1
75	0
76	1
77	2
78	0
79	1
80	2
81	3
82	1
83	2
84	3
85	4
86	2
87	3
88	1
89	2
90	0
91	1
92	2
93	3
94	1
95	2
96	0
97	1
98	-1
99	0
100	1
101	2
102	0
103	1
104	-1
105	0
106	-2

n	a(n)
0	0
1	1
2	-1
3	0
4	1
5	2
6	0
7	1
8	-1
9	0
10	-2
11	-1
12	0
13	1
14	-1
15	0
16	1
17	2
18	0
19	1
20	2
21	3
22	1
23	2
24	0
25	1
26	-1
27	0
28	1
29	2
30	0
31	1
32	-1
33	0
34	-2
35	-1
36	0
37	1
38	-1
39	0
40	-2
41	-1
42	-3
43	-2
44	-1
45	0
46	-2
47	-1
48	0
49	1
50	-1
51	0
52	1
53	2
54	0
55	1
56	-1
57	0
58	-2
59	-1
60	0
61	1
62	-1
63	0
64	1
65	2
66	0
67	1
68	2
69	3
70	1
71	2
72	0
73	1
74	-1
75	0
76	1
77	2
78	0
79	1
80	2
81	3
82	1
83	2
84	3
85	4
86	2
87	3
88	1
89	2
90	0
91	1
92	2
93	3
94	1
95	2
96	0
97	1
98	-1
99	0
100	1
101	2
102	0
103	1
104	-1
105	0
106	-2