A206586 - cp's OEIS frontend

A206586 Numbers k such that the periodic part of the continued fraction of sqrt(k) has positive even length.

n	a(n)
1	3
2	6
3	7
4	8
5	11
6	12
7	14
8	15
9	18
10	19
11	20
12	21
13	22
14	23
15	24
16	27
17	28
18	30
19	31
20	32
21	33
22	34
23	35
24	38
25	39
26	40
27	42
28	43
29	44
30	45
31	46
32	47
33	48
34	51
35	52
36	54
37	55
38	56
39	57
40	59
41	60
42	62
43	63
44	66
45	67
46	68
47	69
48	70
49	71
50	72
51	75
52	76
53	77
54	78
55	79
56	80
57	83
58	84
59	86
60	87
61	88
62	90
63	91
64	92
65	93
66	94

[3, 6, 7, 8, 11, 12, 14, 15, 18, 19, 20, 21, 22, 23, 24, 27, 28, 30, 31, 32, 33, 34, 35, 38, 39, 40, 42, 43, 44, 45, 46, 47, 48, 51, 52, 54, 55, 56, 57, 59, 60, 62, 63, 66, 67, 68, 69, 70, 71, 72, 75, 76, 77, 78, 79, 80, 83, 84, 86, 87, 88, 90, 91, 92, 93, 94]

cp's OEIS Frontend

A206586 Numbers k such that the periodic part of the continued fraction of sqrt(k) has positive even length.

Table of values

List of values

n	a(n)
1	3
2	6
3	7
4	8
5	11
6	12
7	14
8	15
9	18
10	19
11	20
12	21
13	22
14	23
15	24
16	27
17	28
18	30
19	31
20	32
21	33
22	34
23	35
24	38
25	39
26	40
27	42
28	43
29	44
30	45
31	46
32	47
33	48
34	51
35	52
36	54
37	55
38	56
39	57
40	59
41	60
42	62
43	63
44	66
45	67
46	68
47	69
48	70
49	71
50	72
51	75
52	76
53	77
54	78
55	79
56	80
57	83
58	84
59	86
60	87
61	88
62	90
63	91
64	92
65	93
66	94

n	a(n)
1	3
2	6
3	7
4	8
5	11
6	12
7	14
8	15
9	18
10	19
11	20
12	21
13	22
14	23
15	24
16	27
17	28
18	30
19	31
20	32
21	33
22	34
23	35
24	38
25	39
26	40
27	42
28	43
29	44
30	45
31	46
32	47
33	48
34	51
35	52
36	54
37	55
38	56
39	57
40	59
41	60
42	62
43	63
44	66
45	67
46	68
47	69
48	70
49	71
50	72
51	75
52	76
53	77
54	78
55	79
56	80
57	83
58	84
59	86
60	87
61	88
62	90
63	91
64	92
65	93
66	94

n	a(n)
1	3
2	6
3	7
4	8
5	11
6	12
7	14
8	15
9	18
10	19
11	20
12	21
13	22
14	23
15	24
16	27
17	28
18	30
19	31
20	32
21	33
22	34
23	35
24	38
25	39
26	40
27	42
28	43
29	44
30	45
31	46
32	47
33	48
34	51
35	52
36	54
37	55
38	56
39	57
40	59
41	60
42	62
43	63
44	66
45	67
46	68
47	69
48	70
49	71
50	72
51	75
52	76
53	77
54	78
55	79
56	80
57	83
58	84
59	86
60	87
61	88
62	90
63	91
64	92
65	93
66	94