A277790 - cp's OEIS frontend

A277790 Numerator of sum of reciprocals of proper divisors of n.

n	a(n)
1	0
2	1
3	1
4	3
5	1
6	11
7	1
8	7
9	4
10	17
11	1
12	9
13	1
14	23
15	23
16	15
17	1
18	19
19	1
20	41
21	31
22	35
23	1
24	59
25	6
26	41
27	13
28	55
29	1
30	71
31	1
32	31
33	47
34	53
35	47
36	5
37	1
38	59
39	55
40	89
41	1
42	95
43	1
44	83
45	77
46	71
47	1
48	41
49	8
50	46
51	71
52	97
53	1
54	119
55	71
56	17
57	79
58	89
59	1
60	167
61	1
62	95
63	103
64	63
65	83
66	13
67	1
68	125
69	95
70	143
71	1
72	97
73	1
74	113
75	41
76	139
77	95
78	167
79	1
80	37

[0, 1, 1, 3, 1, 11, 1, 7, 4, 17, 1, 9, 1, 23, 23, 15, 1, 19, 1, 41, 31, 35, 1, 59, 6, 41, 13, 55, 1, 71, 1, 31, 47, 53, 47, 5, 1, 59, 55, 89, 1, 95, 1, 83, 77, 71, 1, 41, 8, 46, 71, 97, 1, 119, 71, 17, 79, 89, 1, 167, 1, 95, 103, 63, 83, 13, 1, 125, 95, 143, 1, 97, 1, 113, 41, 139, 95, 167, 1, 37]

cp's OEIS Frontend

A277790 Numerator of sum of reciprocals of proper divisors of n.

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	3
5	1
6	11
7	1
8	7
9	4
10	17
11	1
12	9
13	1
14	23
15	23
16	15
17	1
18	19
19	1
20	41
21	31
22	35
23	1
24	59
25	6
26	41
27	13
28	55
29	1
30	71
31	1
32	31
33	47
34	53
35	47
36	5
37	1
38	59
39	55
40	89
41	1
42	95
43	1
44	83
45	77
46	71
47	1
48	41
49	8
50	46
51	71
52	97
53	1
54	119
55	71
56	17
57	79
58	89
59	1
60	167
61	1
62	95
63	103
64	63
65	83
66	13
67	1
68	125
69	95
70	143
71	1
72	97
73	1
74	113
75	41
76	139
77	95
78	167
79	1
80	37

n	a(n)
1	0
2	1
3	1
4	3
5	1
6	11
7	1
8	7
9	4
10	17
11	1
12	9
13	1
14	23
15	23
16	15
17	1
18	19
19	1
20	41
21	31
22	35
23	1
24	59
25	6
26	41
27	13
28	55
29	1
30	71
31	1
32	31
33	47
34	53
35	47
36	5
37	1
38	59
39	55
40	89
41	1
42	95
43	1
44	83
45	77
46	71
47	1
48	41
49	8
50	46
51	71
52	97
53	1
54	119
55	71
56	17
57	79
58	89
59	1
60	167
61	1
62	95
63	103
64	63
65	83
66	13
67	1
68	125
69	95
70	143
71	1
72	97
73	1
74	113
75	41
76	139
77	95
78	167
79	1
80	37

n	a(n)
1	0
2	1
3	1
4	3
5	1
6	11
7	1
8	7
9	4
10	17
11	1
12	9
13	1
14	23
15	23
16	15
17	1
18	19
19	1
20	41
21	31
22	35
23	1
24	59
25	6
26	41
27	13
28	55
29	1
30	71
31	1
32	31
33	47
34	53
35	47
36	5
37	1
38	59
39	55
40	89
41	1
42	95
43	1
44	83
45	77
46	71
47	1
48	41
49	8
50	46
51	71
52	97
53	1
54	119
55	71
56	17
57	79
58	89
59	1
60	167
61	1
62	95
63	103
64	63
65	83
66	13
67	1
68	125
69	95
70	143
71	1
72	97
73	1
74	113
75	41
76	139
77	95
78	167
79	1
80	37