A161678 - cp's OEIS frontend

A161678 Sum of c mod k for k from (smallest prime factor of c) to (largest prime factor of c) where c is composite(n).

n	a(n)
1	0
2	0
3	0
4	0
5	3
6	0
7	10
8	3
9	0
10	0
11	2
12	5
13	22
14	0
15	0
16	34
17	0
18	8
19	2
20	0
21	22
22	61
23	5
24	0
25	77
26	42
27	1
28	4
29	26
30	1
31	105
32	0
33	0
34	4
35	59
36	35
37	0
38	20
39	5
40	65
41	172
42	0
43	207
44	9
45	0
46	30
47	17
48	66
49	123
50	7
51	0
52	290
53	3
54	82
55	17
56	33
57	2
58	0
59	343
60	4
61	48
62	384
63	197
64	27
65	2
66	15
67	99
68	201
69	470
70	94
71	0
72	9
73	23
74	1
75	61
76	36
77	4
78	573
79	0

[0, 0, 0, 0, 3, 0, 10, 3, 0, 0, 2, 5, 22, 0, 0, 34, 0, 8, 2, 0, 22, 61, 5, 0, 77, 42, 1, 4, 26, 1, 105, 0, 0, 4, 59, 35, 0, 20, 5, 65, 172, 0, 207, 9, 0, 30, 17, 66, 123, 7, 0, 290, 3, 82, 17, 33, 2, 0, 343, 4, 48, 384, 197, 27, 2, 15, 99, 201, 470, 94, 0, 9, 23, 1, 61, 36, 4, 573, 0]

cp's OEIS Frontend

A161678 Sum of c mod k for k from (smallest prime factor of c) to (largest prime factor of c) where c is composite(n).

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	3
6	0
7	10
8	3
9	0
10	0
11	2
12	5
13	22
14	0
15	0
16	34
17	0
18	8
19	2
20	0
21	22
22	61
23	5
24	0
25	77
26	42
27	1
28	4
29	26
30	1
31	105
32	0
33	0
34	4
35	59
36	35
37	0
38	20
39	5
40	65
41	172
42	0
43	207
44	9
45	0
46	30
47	17
48	66
49	123
50	7
51	0
52	290
53	3
54	82
55	17
56	33
57	2
58	0
59	343
60	4
61	48
62	384
63	197
64	27
65	2
66	15
67	99
68	201
69	470
70	94
71	0
72	9
73	23
74	1
75	61
76	36
77	4
78	573
79	0

n	a(n)
1	0
2	0
3	0
4	0
5	3
6	0
7	10
8	3
9	0
10	0
11	2
12	5
13	22
14	0
15	0
16	34
17	0
18	8
19	2
20	0
21	22
22	61
23	5
24	0
25	77
26	42
27	1
28	4
29	26
30	1
31	105
32	0
33	0
34	4
35	59
36	35
37	0
38	20
39	5
40	65
41	172
42	0
43	207
44	9
45	0
46	30
47	17
48	66
49	123
50	7
51	0
52	290
53	3
54	82
55	17
56	33
57	2
58	0
59	343
60	4
61	48
62	384
63	197
64	27
65	2
66	15
67	99
68	201
69	470
70	94
71	0
72	9
73	23
74	1
75	61
76	36
77	4
78	573
79	0

n	a(n)
1	0
2	0
3	0
4	0
5	3
6	0
7	10
8	3
9	0
10	0
11	2
12	5
13	22
14	0
15	0
16	34
17	0
18	8
19	2
20	0
21	22
22	61
23	5
24	0
25	77
26	42
27	1
28	4
29	26
30	1
31	105
32	0
33	0
34	4
35	59
36	35
37	0
38	20
39	5
40	65
41	172
42	0
43	207
44	9
45	0
46	30
47	17
48	66
49	123
50	7
51	0
52	290
53	3
54	82
55	17
56	33
57	2
58	0
59	343
60	4
61	48
62	384
63	197
64	27
65	2
66	15
67	99
68	201
69	470
70	94
71	0
72	9
73	23
74	1
75	61
76	36
77	4
78	573
79	0