A049094 - cp's OEIS frontend

A049094 Numbers m such that 2^m - 1 is divisible by a square > 1.

n	a(n)
1	6
2	12
3	18
4	20
5	21
6	24
7	30
8	36
9	40
10	42
11	48
12	54
13	60
14	63
15	66
16	72
17	78
18	80
19	84
20	90
21	96
22	100
23	102
24	105
25	108
26	110
27	114
28	120
29	126
30	132
31	136
32	138
33	140
34	144
35	147
36	150
37	155
38	156
39	160
40	162
41	168
42	174
43	180
44	186
45	189
46	192
47	198
48	200
49	204
50	210
51	216
52	220
53	222
54	228
55	231
56	234
57	240

[6, 12, 18, 20, 21, 24, 30, 36, 40, 42, 48, 54, 60, 63, 66, 72, 78, 80, 84, 90, 96, 100, 102, 105, 108, 110, 114, 120, 126, 132, 136, 138, 140, 144, 147, 150, 155, 156, 160, 162, 168, 174, 180, 186, 189, 192, 198, 200, 204, 210, 216, 220, 222, 228, 231, 234, 240]

cp's OEIS Frontend

A049094 Numbers m such that 2^m - 1 is divisible by a square > 1.

Table of values

List of values

n	a(n)
1	6
2	12
3	18
4	20
5	21
6	24
7	30
8	36
9	40
10	42
11	48
12	54
13	60
14	63
15	66
16	72
17	78
18	80
19	84
20	90
21	96
22	100
23	102
24	105
25	108
26	110
27	114
28	120
29	126
30	132
31	136
32	138
33	140
34	144
35	147
36	150
37	155
38	156
39	160
40	162
41	168
42	174
43	180
44	186
45	189
46	192
47	198
48	200
49	204
50	210
51	216
52	220
53	222
54	228
55	231
56	234
57	240

n	a(n)
1	6
2	12
3	18
4	20
5	21
6	24
7	30
8	36
9	40
10	42
11	48
12	54
13	60
14	63
15	66
16	72
17	78
18	80
19	84
20	90
21	96
22	100
23	102
24	105
25	108
26	110
27	114
28	120
29	126
30	132
31	136
32	138
33	140
34	144
35	147
36	150
37	155
38	156
39	160
40	162
41	168
42	174
43	180
44	186
45	189
46	192
47	198
48	200
49	204
50	210
51	216
52	220
53	222
54	228
55	231
56	234
57	240

n	a(n)
1	6
2	12
3	18
4	20
5	21
6	24
7	30
8	36
9	40
10	42
11	48
12	54
13	60
14	63
15	66
16	72
17	78
18	80
19	84
20	90
21	96
22	100
23	102
24	105
25	108
26	110
27	114
28	120
29	126
30	132
31	136
32	138
33	140
34	144
35	147
36	150
37	155
38	156
39	160
40	162
41	168
42	174
43	180
44	186
45	189
46	192
47	198
48	200
49	204
50	210
51	216
52	220
53	222
54	228
55	231
56	234
57	240