A292257 - cp's OEIS frontend

A292257 a(n) is the total number of 1's in binary expansion of all proper divisors of n.

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

[0, 1, 1, 2, 1, 4, 1, 3, 3, 4, 1, 7, 1, 5, 5, 4, 1, 8, 1, 7, 6, 5, 1, 10, 3, 5, 5, 9, 1, 14, 1, 5, 6, 4, 6, 13, 1, 5, 6, 10, 1, 15, 1, 9, 11, 6, 1, 13, 4, 9, 5, 9, 1, 14, 6, 13, 6, 6, 1, 23, 1, 7, 11, 6, 6, 14, 1, 7, 7, 15, 1, 18, 1, 5, 12, 9, 7, 16, 1, 13, 9, 5, 1, 24, 5, 6, 7, 13, 1, 26, 7, 11, 8, 7, 6, 16, 1, 11, 10, 15, 1, 14, 1, 13, 18]

cp's OEIS Frontend

A292257 a(n) is the total number of 1's in binary expansion of all proper divisors of n.

Table of values

List of values

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

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

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