A049095 - cp's OEIS frontend

A049095 Numbers k such that 2^k + 1 is squarefree.

n	a(n)
1	0
2	1
3	2
4	4
5	5
6	6
7	7
8	8
9	11
10	12
11	13
12	14
13	16
14	17
15	18
16	19
17	20
18	22
19	23
20	24
21	25
22	26
23	28
24	29
25	31
26	32
27	34
28	35
29	36
30	37
31	38
32	40
33	41
34	42
35	43
36	44
37	46
38	47
39	48
40	49
41	52
42	53
43	54
44	56
45	58
46	59
47	60
48	61
49	62
50	64
51	65
52	66
53	67
54	71
55	72
56	73
57	74
58	76
59	77
60	79
61	80
62	82
63	83
64	84
65	85
66	86
67	88
68	89
69	91
70	92
71	94
72	95

[0, 1, 2, 4, 5, 6, 7, 8, 11, 12, 13, 14, 16, 17, 18, 19, 20, 22, 23, 24, 25, 26, 28, 29, 31, 32, 34, 35, 36, 37, 38, 40, 41, 42, 43, 44, 46, 47, 48, 49, 52, 53, 54, 56, 58, 59, 60, 61, 62, 64, 65, 66, 67, 71, 72, 73, 74, 76, 77, 79, 80, 82, 83, 84, 85, 86, 88, 89, 91, 92, 94, 95]

cp's OEIS Frontend

A049095 Numbers k such that 2^k + 1 is squarefree.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	4
5	5
6	6
7	7
8	8
9	11
10	12
11	13
12	14
13	16
14	17
15	18
16	19
17	20
18	22
19	23
20	24
21	25
22	26
23	28
24	29
25	31
26	32
27	34
28	35
29	36
30	37
31	38
32	40
33	41
34	42
35	43
36	44
37	46
38	47
39	48
40	49
41	52
42	53
43	54
44	56
45	58
46	59
47	60
48	61
49	62
50	64
51	65
52	66
53	67
54	71
55	72
56	73
57	74
58	76
59	77
60	79
61	80
62	82
63	83
64	84
65	85
66	86
67	88
68	89
69	91
70	92
71	94
72	95

n	a(n)
1	0
2	1
3	2
4	4
5	5
6	6
7	7
8	8
9	11
10	12
11	13
12	14
13	16
14	17
15	18
16	19
17	20
18	22
19	23
20	24
21	25
22	26
23	28
24	29
25	31
26	32
27	34
28	35
29	36
30	37
31	38
32	40
33	41
34	42
35	43
36	44
37	46
38	47
39	48
40	49
41	52
42	53
43	54
44	56
45	58
46	59
47	60
48	61
49	62
50	64
51	65
52	66
53	67
54	71
55	72
56	73
57	74
58	76
59	77
60	79
61	80
62	82
63	83
64	84
65	85
66	86
67	88
68	89
69	91
70	92
71	94
72	95

n	a(n)
1	0
2	1
3	2
4	4
5	5
6	6
7	7
8	8
9	11
10	12
11	13
12	14
13	16
14	17
15	18
16	19
17	20
18	22
19	23
20	24
21	25
22	26
23	28
24	29
25	31
26	32
27	34
28	35
29	36
30	37
31	38
32	40
33	41
34	42
35	43
36	44
37	46
38	47
39	48
40	49
41	52
42	53
43	54
44	56
45	58
46	59
47	60
48	61
49	62
50	64
51	65
52	66
53	67
54	71
55	72
56	73
57	74
58	76
59	77
60	79
61	80
62	82
63	83
64	84
65	85
66	86
67	88
68	89
69	91
70	92
71	94
72	95