A326689 - cp's OEIS frontend

A326689 Numerator of the fraction (Sum_{prime p | n} 1/p - 1/n).

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

[-1, 0, 0, 1, 0, 2, 0, 3, 2, 3, 0, 3, 0, 4, 7, 7, 0, 7, 0, 13, 3, 6, 0, 19, 4, 7, 8, 17, 0, 1, 0, 15, 13, 9, 11, 29, 0, 10, 5, 27, 0, 20, 0, 25, 23, 12, 0, 13, 6, 17, 19, 29, 0, 22, 3, 5, 7, 15, 0, 61, 0, 16, 29, 31, 17, 10, 0, 37, 25, 29, 0, 59, 0, 19, 13, 41]

cp's OEIS Frontend

A326689 Numerator of the fraction (Sum_{prime p | n} 1/p - 1/n).

Table of values

List of values

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

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

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