A350780 - cp's OEIS frontend

A350780 Numbers that are the number of divisors of p^2 - 1 for some prime p.

n	a(n)
1	2
2	4
3	8
4	10
5	16
6	18
7	20
8	24
9	28
10	30
11	32
12	36
13	40
14	42
15	48
16	54
17	56
18	60
19	64
20	70
21	72
22	80
23	84
24	88
25	90
26	96
27	100
28	104
29	108
30	112
31	120
32	126
33	128
34	132
35	136
36	140
37	144
38	150
39	152
40	156
41	160
42	162
43	168
44	176
45	180
46	182
47	184
48	192
49	196
50	198
51	200
52	204
53	208
54	210
55	216
56	220
57	224
58	228

[2, 4, 8, 10, 16, 18, 20, 24, 28, 30, 32, 36, 40, 42, 48, 54, 56, 60, 64, 70, 72, 80, 84, 88, 90, 96, 100, 104, 108, 112, 120, 126, 128, 132, 136, 140, 144, 150, 152, 156, 160, 162, 168, 176, 180, 182, 184, 192, 196, 198, 200, 204, 208, 210, 216, 220, 224, 228]

cp's OEIS Frontend

A350780 Numbers that are the number of divisors of p^2 - 1 for some prime p.

Table of values

List of values

n	a(n)
1	2
2	4
3	8
4	10
5	16
6	18
7	20
8	24
9	28
10	30
11	32
12	36
13	40
14	42
15	48
16	54
17	56
18	60
19	64
20	70
21	72
22	80
23	84
24	88
25	90
26	96
27	100
28	104
29	108
30	112
31	120
32	126
33	128
34	132
35	136
36	140
37	144
38	150
39	152
40	156
41	160
42	162
43	168
44	176
45	180
46	182
47	184
48	192
49	196
50	198
51	200
52	204
53	208
54	210
55	216
56	220
57	224
58	228

n	a(n)
1	2
2	4
3	8
4	10
5	16
6	18
7	20
8	24
9	28
10	30
11	32
12	36
13	40
14	42
15	48
16	54
17	56
18	60
19	64
20	70
21	72
22	80
23	84
24	88
25	90
26	96
27	100
28	104
29	108
30	112
31	120
32	126
33	128
34	132
35	136
36	140
37	144
38	150
39	152
40	156
41	160
42	162
43	168
44	176
45	180
46	182
47	184
48	192
49	196
50	198
51	200
52	204
53	208
54	210
55	216
56	220
57	224
58	228

n	a(n)
1	2
2	4
3	8
4	10
5	16
6	18
7	20
8	24
9	28
10	30
11	32
12	36
13	40
14	42
15	48
16	54
17	56
18	60
19	64
20	70
21	72
22	80
23	84
24	88
25	90
26	96
27	100
28	104
29	108
30	112
31	120
32	126
33	128
34	132
35	136
36	140
37	144
38	150
39	152
40	156
41	160
42	162
43	168
44	176
45	180
46	182
47	184
48	192
49	196
50	198
51	200
52	204
53	208
54	210
55	216
56	220
57	224
58	228