A284280 - cp's OEIS frontend

A284280 a(n) = Sum_{d|n, d == 2 (mod 5)} d.

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

[0, 2, 0, 2, 0, 2, 7, 2, 0, 2, 0, 14, 0, 9, 0, 2, 17, 2, 0, 2, 7, 24, 0, 14, 0, 2, 27, 9, 0, 2, 0, 34, 0, 19, 7, 14, 37, 2, 0, 2, 0, 51, 0, 24, 0, 2, 47, 14, 7, 2, 17, 54, 0, 29, 0, 9, 57, 2, 0, 14, 0, 64, 7, 34, 0, 24, 67, 19, 0, 9, 0, 86, 0, 39, 0, 2, 84, 2, 0, 2]

cp's OEIS Frontend

A284280 a(n) = Sum_{d|n, d == 2 (mod 5)} d.

Table of values

List of values

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

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

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