A205524 - cp's OEIS frontend

A205524 Numbers n such that gcd(n, sigma(n)) is not equal to sigma(n) mod n.

n	a(n)
1	4
2	8
3	9
4	10
5	14
6	15
7	16
8	21
9	22
10	25
11	26
12	27
13	30
14	32
15	33
16	34
17	35
18	36
19	38
20	39
21	42
22	44
23	45
24	46
25	48
26	49
27	50
28	51
29	52
30	54
31	55
32	57
33	58
34	60
35	62
36	63
37	64
38	65
39	66
40	68
41	69
42	70
43	72
44	74
45	75
46	76
47	77
48	78
49	80
50	81
51	82
52	84
53	85
54	86
55	87
56	90
57	91
58	92
59	93
60	94
61	95
62	96
63	98
64	99
65	100

[4, 8, 9, 10, 14, 15, 16, 21, 22, 25, 26, 27, 30, 32, 33, 34, 35, 36, 38, 39, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 90, 91, 92, 93, 94, 95, 96, 98, 99, 100]

cp's OEIS Frontend

A205524 Numbers n such that gcd(n, sigma(n)) is not equal to sigma(n) mod n.

Table of values

List of values

n	a(n)
1	4
2	8
3	9
4	10
5	14
6	15
7	16
8	21
9	22
10	25
11	26
12	27
13	30
14	32
15	33
16	34
17	35
18	36
19	38
20	39
21	42
22	44
23	45
24	46
25	48
26	49
27	50
28	51
29	52
30	54
31	55
32	57
33	58
34	60
35	62
36	63
37	64
38	65
39	66
40	68
41	69
42	70
43	72
44	74
45	75
46	76
47	77
48	78
49	80
50	81
51	82
52	84
53	85
54	86
55	87
56	90
57	91
58	92
59	93
60	94
61	95
62	96
63	98
64	99
65	100

n	a(n)
1	4
2	8
3	9
4	10
5	14
6	15
7	16
8	21
9	22
10	25
11	26
12	27
13	30
14	32
15	33
16	34
17	35
18	36
19	38
20	39
21	42
22	44
23	45
24	46
25	48
26	49
27	50
28	51
29	52
30	54
31	55
32	57
33	58
34	60
35	62
36	63
37	64
38	65
39	66
40	68
41	69
42	70
43	72
44	74
45	75
46	76
47	77
48	78
49	80
50	81
51	82
52	84
53	85
54	86
55	87
56	90
57	91
58	92
59	93
60	94
61	95
62	96
63	98
64	99
65	100

n	a(n)
1	4
2	8
3	9
4	10
5	14
6	15
7	16
8	21
9	22
10	25
11	26
12	27
13	30
14	32
15	33
16	34
17	35
18	36
19	38
20	39
21	42
22	44
23	45
24	46
25	48
26	49
27	50
28	51
29	52
30	54
31	55
32	57
33	58
34	60
35	62
36	63
37	64
38	65
39	66
40	68
41	69
42	70
43	72
44	74
45	75
46	76
47	77
48	78
49	80
50	81
51	82
52	84
53	85
54	86
55	87
56	90
57	91
58	92
59	93
60	94
61	95
62	96
63	98
64	99
65	100