A027615 - cp's OEIS frontend

A027615 Number of 1's when n is written in base -2.

n	a(n)
0	0
1	1
2	2
3	3
4	1
5	2
6	3
7	4
8	2
9	3
10	4
11	5
12	3
13	4
14	2
15	3
16	1
17	2
18	3
19	4
20	2
21	3
22	4
23	5
24	3
25	4
26	5
27	6
28	4
29	5
30	3
31	4
32	2
33	3
34	4
35	5
36	3
37	4
38	5
39	6
40	4
41	5
42	6
43	7
44	5
45	6
46	4
47	5
48	3
49	4
50	5
51	6
52	4
53	5
54	3
55	4
56	2
57	3
58	4
59	5
60	3
61	4
62	2
63	3
64	1
65	2
66	3
67	4
68	2
69	3
70	4
71	5
72	3
73	4
74	5
75	6
76	4
77	5
78	3
79	4
80	2

[0, 1, 2, 3, 1, 2, 3, 4, 2, 3, 4, 5, 3, 4, 2, 3, 1, 2, 3, 4, 2, 3, 4, 5, 3, 4, 5, 6, 4, 5, 3, 4, 2, 3, 4, 5, 3, 4, 5, 6, 4, 5, 6, 7, 5, 6, 4, 5, 3, 4, 5, 6, 4, 5, 3, 4, 2, 3, 4, 5, 3, 4, 2, 3, 1, 2, 3, 4, 2, 3, 4, 5, 3, 4, 5, 6, 4, 5, 3, 4, 2]

cp's OEIS Frontend

A027615 Number of 1's when n is written in base -2.

Table of values

List of values

n	a(n)
0	0
1	1
2	2
3	3
4	1
5	2
6	3
7	4
8	2
9	3
10	4
11	5
12	3
13	4
14	2
15	3
16	1
17	2
18	3
19	4
20	2
21	3
22	4
23	5
24	3
25	4
26	5
27	6
28	4
29	5
30	3
31	4
32	2
33	3
34	4
35	5
36	3
37	4
38	5
39	6
40	4
41	5
42	6
43	7
44	5
45	6
46	4
47	5
48	3
49	4
50	5
51	6
52	4
53	5
54	3
55	4
56	2
57	3
58	4
59	5
60	3
61	4
62	2
63	3
64	1
65	2
66	3
67	4
68	2
69	3
70	4
71	5
72	3
73	4
74	5
75	6
76	4
77	5
78	3
79	4
80	2

n	a(n)
0	0
1	1
2	2
3	3
4	1
5	2
6	3
7	4
8	2
9	3
10	4
11	5
12	3
13	4
14	2
15	3
16	1
17	2
18	3
19	4
20	2
21	3
22	4
23	5
24	3
25	4
26	5
27	6
28	4
29	5
30	3
31	4
32	2
33	3
34	4
35	5
36	3
37	4
38	5
39	6
40	4
41	5
42	6
43	7
44	5
45	6
46	4
47	5
48	3
49	4
50	5
51	6
52	4
53	5
54	3
55	4
56	2
57	3
58	4
59	5
60	3
61	4
62	2
63	3
64	1
65	2
66	3
67	4
68	2
69	3
70	4
71	5
72	3
73	4
74	5
75	6
76	4
77	5
78	3
79	4
80	2

n	a(n)
0	0
1	1
2	2
3	3
4	1
5	2
6	3
7	4
8	2
9	3
10	4
11	5
12	3
13	4
14	2
15	3
16	1
17	2
18	3
19	4
20	2
21	3
22	4
23	5
24	3
25	4
26	5
27	6
28	4
29	5
30	3
31	4
32	2
33	3
34	4
35	5
36	3
37	4
38	5
39	6
40	4
41	5
42	6
43	7
44	5
45	6
46	4
47	5
48	3
49	4
50	5
51	6
52	4
53	5
54	3
55	4
56	2
57	3
58	4
59	5
60	3
61	4
62	2
63	3
64	1
65	2
66	3
67	4
68	2
69	3
70	4
71	5
72	3
73	4
74	5
75	6
76	4
77	5
78	3
79	4
80	2