A175679 - cp's OEIS frontend

A175679 Numbers m such that arithmetic mean Ad(m) of divisors of m and arithmetic mean Ak(m) of numbers 1 <= k <= m are both integer.

n	a(n)
1	1
2	3
3	5
4	7
5	11
6	13
7	15
8	17
9	19
10	21
11	23
12	27
13	29
14	31
15	33
16	35
17	37
18	39
19	41
20	43
21	45
22	47
23	49
24	51
25	53
26	55
27	57
28	59
29	61
30	65
31	67
32	69
33	71
34	73
35	77
36	79
37	83
38	85
39	87
40	89
41	91
42	93
43	95
44	97
45	99
46	101
47	103
48	105
49	107
50	109
51	111
52	113
53	115
54	119
55	123
56	125
57	127
58	129
59	131
60	133
61	135
62	137
63	139
64	141

[1, 3, 5, 7, 11, 13, 15, 17, 19, 21, 23, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 65, 67, 69, 71, 73, 77, 79, 83, 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109, 111, 113, 115, 119, 123, 125, 127, 129, 131, 133, 135, 137, 139, 141]

cp's OEIS Frontend

A175679 Numbers m such that arithmetic mean Ad(m) of divisors of m and arithmetic mean Ak(m) of numbers 1 <= k <= m are both integer.

Table of values

List of values

n	a(n)
1	1
2	3
3	5
4	7
5	11
6	13
7	15
8	17
9	19
10	21
11	23
12	27
13	29
14	31
15	33
16	35
17	37
18	39
19	41
20	43
21	45
22	47
23	49
24	51
25	53
26	55
27	57
28	59
29	61
30	65
31	67
32	69
33	71
34	73
35	77
36	79
37	83
38	85
39	87
40	89
41	91
42	93
43	95
44	97
45	99
46	101
47	103
48	105
49	107
50	109
51	111
52	113
53	115
54	119
55	123
56	125
57	127
58	129
59	131
60	133
61	135
62	137
63	139
64	141

n	a(n)
1	1
2	3
3	5
4	7
5	11
6	13
7	15
8	17
9	19
10	21
11	23
12	27
13	29
14	31
15	33
16	35
17	37
18	39
19	41
20	43
21	45
22	47
23	49
24	51
25	53
26	55
27	57
28	59
29	61
30	65
31	67
32	69
33	71
34	73
35	77
36	79
37	83
38	85
39	87
40	89
41	91
42	93
43	95
44	97
45	99
46	101
47	103
48	105
49	107
50	109
51	111
52	113
53	115
54	119
55	123
56	125
57	127
58	129
59	131
60	133
61	135
62	137
63	139
64	141

n	a(n)
1	1
2	3
3	5
4	7
5	11
6	13
7	15
8	17
9	19
10	21
11	23
12	27
13	29
14	31
15	33
16	35
17	37
18	39
19	41
20	43
21	45
22	47
23	49
24	51
25	53
26	55
27	57
28	59
29	61
30	65
31	67
32	69
33	71
34	73
35	77
36	79
37	83
38	85
39	87
40	89
41	91
42	93
43	95
44	97
45	99
46	101
47	103
48	105
49	107
50	109
51	111
52	113
53	115
54	119
55	123
56	125
57	127
58	129
59	131
60	133
61	135
62	137
63	139
64	141