A318463 - cp's OEIS frontend

A318463 a(n) = Sum_{d|n, d < n/d} (d AND n/d), where AND is bitwise-and (A004198).

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

[0, 0, 1, 0, 1, 2, 1, 0, 1, 0, 1, 2, 1, 2, 2, 0, 1, 2, 1, 6, 4, 2, 1, 4, 1, 0, 2, 6, 1, 8, 1, 0, 4, 0, 6, 2, 1, 2, 2, 0, 1, 8, 1, 2, 5, 2, 1, 4, 1, 0, 2, 6, 1, 4, 2, 4, 4, 0, 1, 12, 1, 2, 3, 0, 6, 4, 1, 2, 4, 8, 1, 12, 1, 0, 7, 2, 4, 8, 1, 12, 4, 0, 1, 16, 2, 2, 2, 12, 1, 16, 6, 6, 4, 2, 2, 8, 1, 6, 11, 6, 1, 4, 1, 8, 16]

cp's OEIS Frontend

A318463 a(n) = Sum_{d|n, d < n/d} (d AND n/d), where AND is bitwise-and (A004198).

Table of values

List of values

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

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

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