A071000 - cp's OEIS frontend

A071000 Numbers m such that the denominator of Sum_{k=1..m} 1/gcd(m,k) equals m.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	9
9	10
10	11
11	12
12	13
13	14
14	16
15	17
16	19
17	20
18	22
19	23
20	24
21	25
22	26
23	27
24	28
25	29
26	31
27	32
28	34
29	36
30	37
31	38
32	39
33	40
34	41
35	43
36	46
37	47
38	49
39	50
40	52
41	53
42	55
43	56
44	57
45	58
46	59
47	61
48	62
49	63
50	64
51	65
52	67
53	68
54	71
55	72
56	73
57	74
58	75
59	76
60	77
61	79
62	80
63	81
64	82
65	83
66	85
67	86
68	88
69	89
70	91
71	92
72	93

[1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 19, 20, 22, 23, 24, 25, 26, 27, 28, 29, 31, 32, 34, 36, 37, 38, 39, 40, 41, 43, 46, 47, 49, 50, 52, 53, 55, 56, 57, 58, 59, 61, 62, 63, 64, 65, 67, 68, 71, 72, 73, 74, 75, 76, 77, 79, 80, 81, 82, 83, 85, 86, 88, 89, 91, 92, 93]

cp's OEIS Frontend

A071000 Numbers m such that the denominator of Sum_{k=1..m} 1/gcd(m,k) equals m.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	9
9	10
10	11
11	12
12	13
13	14
14	16
15	17
16	19
17	20
18	22
19	23
20	24
21	25
22	26
23	27
24	28
25	29
26	31
27	32
28	34
29	36
30	37
31	38
32	39
33	40
34	41
35	43
36	46
37	47
38	49
39	50
40	52
41	53
42	55
43	56
44	57
45	58
46	59
47	61
48	62
49	63
50	64
51	65
52	67
53	68
54	71
55	72
56	73
57	74
58	75
59	76
60	77
61	79
62	80
63	81
64	82
65	83
66	85
67	86
68	88
69	89
70	91
71	92
72	93

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	9
9	10
10	11
11	12
12	13
13	14
14	16
15	17
16	19
17	20
18	22
19	23
20	24
21	25
22	26
23	27
24	28
25	29
26	31
27	32
28	34
29	36
30	37
31	38
32	39
33	40
34	41
35	43
36	46
37	47
38	49
39	50
40	52
41	53
42	55
43	56
44	57
45	58
46	59
47	61
48	62
49	63
50	64
51	65
52	67
53	68
54	71
55	72
56	73
57	74
58	75
59	76
60	77
61	79
62	80
63	81
64	82
65	83
66	85
67	86
68	88
69	89
70	91
71	92
72	93

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	9
9	10
10	11
11	12
12	13
13	14
14	16
15	17
16	19
17	20
18	22
19	23
20	24
21	25
22	26
23	27
24	28
25	29
26	31
27	32
28	34
29	36
30	37
31	38
32	39
33	40
34	41
35	43
36	46
37	47
38	49
39	50
40	52
41	53
42	55
43	56
44	57
45	58
46	59
47	61
48	62
49	63
50	64
51	65
52	67
53	68
54	71
55	72
56	73
57	74
58	75
59	76
60	77
61	79
62	80
63	81
64	82
65	83
66	85
67	86
68	88
69	89
70	91
71	92
72	93