A117204 - cp's OEIS frontend

A117204 Squarefree positive integers k such that 2*k+1 is also squarefree.

n	a(n)
1	1
2	2
3	3
4	5
5	6
6	7
7	10
8	11
9	14
10	15
11	17
12	19
13	21
14	23
15	26
16	29
17	30
18	33
19	34
20	35
21	38
22	39
23	41
24	42
25	43
26	46
27	47
28	51
29	53
30	55
31	57
32	59
33	61
34	65
35	66
36	69
37	70
38	71
39	74
40	77
41	78
42	79
43	82
44	83
45	86
46	89
47	91
48	93
49	95
50	97
51	101
52	102
53	105
54	106
55	107
56	109
57	110
58	111
59	113
60	114
61	115
62	118
63	119

[1, 2, 3, 5, 6, 7, 10, 11, 14, 15, 17, 19, 21, 23, 26, 29, 30, 33, 34, 35, 38, 39, 41, 42, 43, 46, 47, 51, 53, 55, 57, 59, 61, 65, 66, 69, 70, 71, 74, 77, 78, 79, 82, 83, 86, 89, 91, 93, 95, 97, 101, 102, 105, 106, 107, 109, 110, 111, 113, 114, 115, 118, 119]

cp's OEIS Frontend

A117204 Squarefree positive integers k such that 2*k+1 is also squarefree.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	5
5	6
6	7
7	10
8	11
9	14
10	15
11	17
12	19
13	21
14	23
15	26
16	29
17	30
18	33
19	34
20	35
21	38
22	39
23	41
24	42
25	43
26	46
27	47
28	51
29	53
30	55
31	57
32	59
33	61
34	65
35	66
36	69
37	70
38	71
39	74
40	77
41	78
42	79
43	82
44	83
45	86
46	89
47	91
48	93
49	95
50	97
51	101
52	102
53	105
54	106
55	107
56	109
57	110
58	111
59	113
60	114
61	115
62	118
63	119

n	a(n)
1	1
2	2
3	3
4	5
5	6
6	7
7	10
8	11
9	14
10	15
11	17
12	19
13	21
14	23
15	26
16	29
17	30
18	33
19	34
20	35
21	38
22	39
23	41
24	42
25	43
26	46
27	47
28	51
29	53
30	55
31	57
32	59
33	61
34	65
35	66
36	69
37	70
38	71
39	74
40	77
41	78
42	79
43	82
44	83
45	86
46	89
47	91
48	93
49	95
50	97
51	101
52	102
53	105
54	106
55	107
56	109
57	110
58	111
59	113
60	114
61	115
62	118
63	119

n	a(n)
1	1
2	2
3	3
4	5
5	6
6	7
7	10
8	11
9	14
10	15
11	17
12	19
13	21
14	23
15	26
16	29
17	30
18	33
19	34
20	35
21	38
22	39
23	41
24	42
25	43
26	46
27	47
28	51
29	53
30	55
31	57
32	59
33	61
34	65
35	66
36	69
37	70
38	71
39	74
40	77
41	78
42	79
43	82
44	83
45	86
46	89
47	91
48	93
49	95
50	97
51	101
52	102
53	105
54	106
55	107
56	109
57	110
58	111
59	113
60	114
61	115
62	118
63	119