A095112 - cp's OEIS frontend

A095112 a(n) is the sum of n/k over all prime powers k > 1 which divide n.

n	a(n)
1	0
2	1
3	1
4	3
5	1
6	5
7	1
8	7
9	4
10	7
11	1
12	13
13	1
14	9
15	8
16	15
17	1
18	17
19	1
20	19
21	10
22	13
23	1
24	29
25	6
26	15
27	13
28	25
29	1
30	31
31	1
32	31
33	14
34	19
35	12
36	43
37	1
38	21
39	16
40	43
41	1
42	41
43	1
44	37
45	29
46	25
47	1
48	61
49	8
50	37
51	20
52	43
53	1
54	53
55	16
56	57
57	22
58	31
59	1
60	77
61	1
62	33
63	37
64	63
65	18
66	61
67	1
68	55
69	26
70	59
71	1
72	95
73	1
74	39
75	43
76	61
77	18
78	71
79	1
80	91
81	40

[0, 1, 1, 3, 1, 5, 1, 7, 4, 7, 1, 13, 1, 9, 8, 15, 1, 17, 1, 19, 10, 13, 1, 29, 6, 15, 13, 25, 1, 31, 1, 31, 14, 19, 12, 43, 1, 21, 16, 43, 1, 41, 1, 37, 29, 25, 1, 61, 8, 37, 20, 43, 1, 53, 16, 57, 22, 31, 1, 77, 1, 33, 37, 63, 18, 61, 1, 55, 26, 59, 1, 95, 1, 39, 43, 61, 18, 71, 1, 91, 40]

cp's OEIS Frontend

A095112 a(n) is the sum of n/k over all prime powers k > 1 which divide n.

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	3
5	1
6	5
7	1
8	7
9	4
10	7
11	1
12	13
13	1
14	9
15	8
16	15
17	1
18	17
19	1
20	19
21	10
22	13
23	1
24	29
25	6
26	15
27	13
28	25
29	1
30	31
31	1
32	31
33	14
34	19
35	12
36	43
37	1
38	21
39	16
40	43
41	1
42	41
43	1
44	37
45	29
46	25
47	1
48	61
49	8
50	37
51	20
52	43
53	1
54	53
55	16
56	57
57	22
58	31
59	1
60	77
61	1
62	33
63	37
64	63
65	18
66	61
67	1
68	55
69	26
70	59
71	1
72	95
73	1
74	39
75	43
76	61
77	18
78	71
79	1
80	91
81	40

n	a(n)
1	0
2	1
3	1
4	3
5	1
6	5
7	1
8	7
9	4
10	7
11	1
12	13
13	1
14	9
15	8
16	15
17	1
18	17
19	1
20	19
21	10
22	13
23	1
24	29
25	6
26	15
27	13
28	25
29	1
30	31
31	1
32	31
33	14
34	19
35	12
36	43
37	1
38	21
39	16
40	43
41	1
42	41
43	1
44	37
45	29
46	25
47	1
48	61
49	8
50	37
51	20
52	43
53	1
54	53
55	16
56	57
57	22
58	31
59	1
60	77
61	1
62	33
63	37
64	63
65	18
66	61
67	1
68	55
69	26
70	59
71	1
72	95
73	1
74	39
75	43
76	61
77	18
78	71
79	1
80	91
81	40

n	a(n)
1	0
2	1
3	1
4	3
5	1
6	5
7	1
8	7
9	4
10	7
11	1
12	13
13	1
14	9
15	8
16	15
17	1
18	17
19	1
20	19
21	10
22	13
23	1
24	29
25	6
26	15
27	13
28	25
29	1
30	31
31	1
32	31
33	14
34	19
35	12
36	43
37	1
38	21
39	16
40	43
41	1
42	41
43	1
44	37
45	29
46	25
47	1
48	61
49	8
50	37
51	20
52	43
53	1
54	53
55	16
56	57
57	22
58	31
59	1
60	77
61	1
62	33
63	37
64	63
65	18
66	61
67	1
68	55
69	26
70	59
71	1
72	95
73	1
74	39
75	43
76	61
77	18
78	71
79	1
80	91
81	40