A284281 - cp's OEIS frontend

A284281 a(n) = Sum_{d|n, d == 3 (mod 5)} d.

n	a(n)
1	0
2	0
3	3
4	0
5	0
6	3
7	0
8	8
9	3
10	0
11	0
12	3
13	13
14	0
15	3
16	8
17	0
18	21
19	0
20	0
21	3
22	0
23	23
24	11
25	0
26	13
27	3
28	28
29	0
30	3
31	0
32	8
33	36
34	0
35	0
36	21
37	0
38	38
39	16
40	8
41	0
42	3
43	43
44	0
45	3
46	23
47	0
48	59
49	0
50	0
51	3
52	13
53	53
54	21
55	0
56	36
57	3
58	58
59	0
60	3
61	0
62	0
63	66
64	8
65	13
66	36
67	0
68	68
69	26
70	0
71	0
72	29
73	73
74	0
75	3
76	38
77	0
78	94
79	0
80	8

[0, 0, 3, 0, 0, 3, 0, 8, 3, 0, 0, 3, 13, 0, 3, 8, 0, 21, 0, 0, 3, 0, 23, 11, 0, 13, 3, 28, 0, 3, 0, 8, 36, 0, 0, 21, 0, 38, 16, 8, 0, 3, 43, 0, 3, 23, 0, 59, 0, 0, 3, 13, 53, 21, 0, 36, 3, 58, 0, 3, 0, 0, 66, 8, 13, 36, 0, 68, 26, 0, 0, 29, 73, 0, 3, 38, 0, 94, 0, 8]

cp's OEIS Frontend

A284281 a(n) = Sum_{d|n, d == 3 (mod 5)} d.

Table of values

List of values

n	a(n)
1	0
2	0
3	3
4	0
5	0
6	3
7	0
8	8
9	3
10	0
11	0
12	3
13	13
14	0
15	3
16	8
17	0
18	21
19	0
20	0
21	3
22	0
23	23
24	11
25	0
26	13
27	3
28	28
29	0
30	3
31	0
32	8
33	36
34	0
35	0
36	21
37	0
38	38
39	16
40	8
41	0
42	3
43	43
44	0
45	3
46	23
47	0
48	59
49	0
50	0
51	3
52	13
53	53
54	21
55	0
56	36
57	3
58	58
59	0
60	3
61	0
62	0
63	66
64	8
65	13
66	36
67	0
68	68
69	26
70	0
71	0
72	29
73	73
74	0
75	3
76	38
77	0
78	94
79	0
80	8

n	a(n)
1	0
2	0
3	3
4	0
5	0
6	3
7	0
8	8
9	3
10	0
11	0
12	3
13	13
14	0
15	3
16	8
17	0
18	21
19	0
20	0
21	3
22	0
23	23
24	11
25	0
26	13
27	3
28	28
29	0
30	3
31	0
32	8
33	36
34	0
35	0
36	21
37	0
38	38
39	16
40	8
41	0
42	3
43	43
44	0
45	3
46	23
47	0
48	59
49	0
50	0
51	3
52	13
53	53
54	21
55	0
56	36
57	3
58	58
59	0
60	3
61	0
62	0
63	66
64	8
65	13
66	36
67	0
68	68
69	26
70	0
71	0
72	29
73	73
74	0
75	3
76	38
77	0
78	94
79	0
80	8

n	a(n)
1	0
2	0
3	3
4	0
5	0
6	3
7	0
8	8
9	3
10	0
11	0
12	3
13	13
14	0
15	3
16	8
17	0
18	21
19	0
20	0
21	3
22	0
23	23
24	11
25	0
26	13
27	3
28	28
29	0
30	3
31	0
32	8
33	36
34	0
35	0
36	21
37	0
38	38
39	16
40	8
41	0
42	3
43	43
44	0
45	3
46	23
47	0
48	59
49	0
50	0
51	3
52	13
53	53
54	21
55	0
56	36
57	3
58	58
59	0
60	3
61	0
62	0
63	66
64	8
65	13
66	36
67	0
68	68
69	26
70	0
71	0
72	29
73	73
74	0
75	3
76	38
77	0
78	94
79	0
80	8