A175904 - cp's OEIS frontend

A175904 Numbers m for which the set of prime divisors of m^2-1 is unique.

n	a(n)
1	2
2	3
3	6
4	8
5	9
6	10
7	12
8	14
9	15
10	16
11	18
12	20
13	21
14	22
15	24
16	27
17	28
18	30
19	32
20	33
21	36
22	38
23	39
24	40
25	42
26	44
27	45
28	46
29	47
30	48
31	50
32	52
33	54
34	57
35	58
36	60
37	62
38	63
39	64
40	66
41	68
42	69
43	70
44	72
45	73
46	74
47	75
48	77
49	78
50	80
51	82
52	84
53	85
54	86
55	87
56	88
57	90
58	93
59	94
60	95
61	96
62	98
63	99

[2, 3, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 27, 28, 30, 32, 33, 36, 38, 39, 40, 42, 44, 45, 46, 47, 48, 50, 52, 54, 57, 58, 60, 62, 63, 64, 66, 68, 69, 70, 72, 73, 74, 75, 77, 78, 80, 82, 84, 85, 86, 87, 88, 90, 93, 94, 95, 96, 98, 99]

cp's OEIS Frontend

A175904 Numbers m for which the set of prime divisors of m^2-1 is unique.

Table of values

List of values

n	a(n)
1	2
2	3
3	6
4	8
5	9
6	10
7	12
8	14
9	15
10	16
11	18
12	20
13	21
14	22
15	24
16	27
17	28
18	30
19	32
20	33
21	36
22	38
23	39
24	40
25	42
26	44
27	45
28	46
29	47
30	48
31	50
32	52
33	54
34	57
35	58
36	60
37	62
38	63
39	64
40	66
41	68
42	69
43	70
44	72
45	73
46	74
47	75
48	77
49	78
50	80
51	82
52	84
53	85
54	86
55	87
56	88
57	90
58	93
59	94
60	95
61	96
62	98
63	99

n	a(n)
1	2
2	3
3	6
4	8
5	9
6	10
7	12
8	14
9	15
10	16
11	18
12	20
13	21
14	22
15	24
16	27
17	28
18	30
19	32
20	33
21	36
22	38
23	39
24	40
25	42
26	44
27	45
28	46
29	47
30	48
31	50
32	52
33	54
34	57
35	58
36	60
37	62
38	63
39	64
40	66
41	68
42	69
43	70
44	72
45	73
46	74
47	75
48	77
49	78
50	80
51	82
52	84
53	85
54	86
55	87
56	88
57	90
58	93
59	94
60	95
61	96
62	98
63	99

n	a(n)
1	2
2	3
3	6
4	8
5	9
6	10
7	12
8	14
9	15
10	16
11	18
12	20
13	21
14	22
15	24
16	27
17	28
18	30
19	32
20	33
21	36
22	38
23	39
24	40
25	42
26	44
27	45
28	46
29	47
30	48
31	50
32	52
33	54
34	57
35	58
36	60
37	62
38	63
39	64
40	66
41	68
42	69
43	70
44	72
45	73
46	74
47	75
48	77
49	78
50	80
51	82
52	84
53	85
54	86
55	87
56	88
57	90
58	93
59	94
60	95
61	96
62	98
63	99