A318468 - cp's OEIS frontend

A318468 a(n) = 2*n AND A000203(n), where AND is bitwise-and (A004198) and A000203 = sum of divisors.

n	a(n)
1	0
2	0
3	4
4	0
5	2
6	12
7	8
8	0
9	0
10	16
11	4
12	24
13	10
14	24
15	24
16	0
17	2
18	36
19	4
20	40
21	32
22	36
23	8
24	48
25	18
26	32
27	32
28	56
29	26
30	8
31	32
32	0
33	0
34	4
35	0
36	72
37	2
38	12
39	8
40	80
41	2
42	64
43	4
44	80
45	74
46	72
47	16
48	96
49	32
50	68
51	64
52	96
53	34
54	104
55	72
56	112
57	80
58	80
59	52
60	40
61	58
62	96
63	104
64	0
65	0
66	128
67	4
68	8
69	0
70	128
71	8
72	128
73	2
74	16
75	20
76	136
77	0
78	136
79	16
80	160
81	32
82	36
83	4
84	160
85	40
86	132
87	40
88	176
89	18
90	160
91	48

[0, 0, 4, 0, 2, 12, 8, 0, 0, 16, 4, 24, 10, 24, 24, 0, 2, 36, 4, 40, 32, 36, 8, 48, 18, 32, 32, 56, 26, 8, 32, 0, 0, 4, 0, 72, 2, 12, 8, 80, 2, 64, 4, 80, 74, 72, 16, 96, 32, 68, 64, 96, 34, 104, 72, 112, 80, 80, 52, 40, 58, 96, 104, 0, 0, 128, 4, 8, 0, 128, 8, 128, 2, 16, 20, 136, 0, 136, 16, 160, 32, 36, 4, 160, 40, 132, 40, 176, 18, 160, 48]

cp's OEIS Frontend

A318468 a(n) = 2*n AND A000203(n), where AND is bitwise-and (A004198) and A000203 = sum of divisors.

Table of values

List of values

n	a(n)
1	0
2	0
3	4
4	0
5	2
6	12
7	8
8	0
9	0
10	16
11	4
12	24
13	10
14	24
15	24
16	0
17	2
18	36
19	4
20	40
21	32
22	36
23	8
24	48
25	18
26	32
27	32
28	56
29	26
30	8
31	32
32	0
33	0
34	4
35	0
36	72
37	2
38	12
39	8
40	80
41	2
42	64
43	4
44	80
45	74
46	72
47	16
48	96
49	32
50	68
51	64
52	96
53	34
54	104
55	72
56	112
57	80
58	80
59	52
60	40
61	58
62	96
63	104
64	0
65	0
66	128
67	4
68	8
69	0
70	128
71	8
72	128
73	2
74	16
75	20
76	136
77	0
78	136
79	16
80	160
81	32
82	36
83	4
84	160
85	40
86	132
87	40
88	176
89	18
90	160
91	48

n	a(n)
1	0
2	0
3	4
4	0
5	2
6	12
7	8
8	0
9	0
10	16
11	4
12	24
13	10
14	24
15	24
16	0
17	2
18	36
19	4
20	40
21	32
22	36
23	8
24	48
25	18
26	32
27	32
28	56
29	26
30	8
31	32
32	0
33	0
34	4
35	0
36	72
37	2
38	12
39	8
40	80
41	2
42	64
43	4
44	80
45	74
46	72
47	16
48	96
49	32
50	68
51	64
52	96
53	34
54	104
55	72
56	112
57	80
58	80
59	52
60	40
61	58
62	96
63	104
64	0
65	0
66	128
67	4
68	8
69	0
70	128
71	8
72	128
73	2
74	16
75	20
76	136
77	0
78	136
79	16
80	160
81	32
82	36
83	4
84	160
85	40
86	132
87	40
88	176
89	18
90	160
91	48

n	a(n)
1	0
2	0
3	4
4	0
5	2
6	12
7	8
8	0
9	0
10	16
11	4
12	24
13	10
14	24
15	24
16	0
17	2
18	36
19	4
20	40
21	32
22	36
23	8
24	48
25	18
26	32
27	32
28	56
29	26
30	8
31	32
32	0
33	0
34	4
35	0
36	72
37	2
38	12
39	8
40	80
41	2
42	64
43	4
44	80
45	74
46	72
47	16
48	96
49	32
50	68
51	64
52	96
53	34
54	104
55	72
56	112
57	80
58	80
59	52
60	40
61	58
62	96
63	104
64	0
65	0
66	128
67	4
68	8
69	0
70	128
71	8
72	128
73	2
74	16
75	20
76	136
77	0
78	136
79	16
80	160
81	32
82	36
83	4
84	160
85	40
86	132
87	40
88	176
89	18
90	160
91	48