A050464 - cp's OEIS frontend

A050464 a(n) = Sum_{d|n, n/d=3 mod 4} d.

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

[0, 0, 1, 0, 0, 2, 1, 0, 3, 0, 1, 4, 0, 2, 6, 0, 0, 6, 1, 0, 10, 2, 1, 8, 0, 0, 10, 4, 0, 12, 1, 0, 14, 0, 6, 12, 0, 2, 14, 0, 0, 20, 1, 4, 18, 2, 1, 16, 7, 0, 18, 0, 0, 20, 6, 8, 22, 0, 1, 24, 0, 2, 31, 0, 0, 28, 1, 0, 26, 12, 1, 24, 0, 0, 31, 4, 18, 28, 1, 0, 30, 0, 1]

cp's OEIS Frontend

A050464 a(n) = Sum_{d|n, n/d=3 mod 4} d.

Table of values

List of values

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

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

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