A003285 - cp's OEIS frontend

A003285 Period of continued fraction for square root of n (or 0 if n is a square).

n	a(n)
1	0
2	1
3	2
4	0
5	1
6	2
7	4
8	2
9	0
10	1
11	2
12	2
13	5
14	4
15	2
16	0
17	1
18	2
19	6
20	2
21	6
22	6
23	4
24	2
25	0
26	1
27	2
28	4
29	5
30	2
31	8
32	4
33	4
34	4
35	2
36	0
37	1
38	2
39	2
40	2
41	3
42	2
43	10
44	8
45	6
46	12
47	4
48	2
49	0
50	1
51	2
52	6
53	5
54	6
55	4
56	2
57	6
58	7
59	6
60	4
61	11
62	4
63	2
64	0
65	1
66	2
67	10
68	2
69	8
70	6
71	8
72	2
73	7
74	5
75	4
76	12
77	6
78	4
79	4
80	2
81	0
82	1
83	2
84	2
85	5
86	10
87	2
88	6
89	5
90	2
91	8
92	8
93	10
94	16
95	4
96	4
97	11
98	4
99	2
100	0
101	1
102	2
103	12

[0, 1, 2, 0, 1, 2, 4, 2, 0, 1, 2, 2, 5, 4, 2, 0, 1, 2, 6, 2, 6, 6, 4, 2, 0, 1, 2, 4, 5, 2, 8, 4, 4, 4, 2, 0, 1, 2, 2, 2, 3, 2, 10, 8, 6, 12, 4, 2, 0, 1, 2, 6, 5, 6, 4, 2, 6, 7, 6, 4, 11, 4, 2, 0, 1, 2, 10, 2, 8, 6, 8, 2, 7, 5, 4, 12, 6, 4, 4, 2, 0, 1, 2, 2, 5, 10, 2, 6, 5, 2, 8, 8, 10, 16, 4, 4, 11, 4, 2, 0, 1, 2, 12]

cp's OEIS Frontend

A003285 Period of continued fraction for square root of n (or 0 if n is a square).

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	0
5	1
6	2
7	4
8	2
9	0
10	1
11	2
12	2
13	5
14	4
15	2
16	0
17	1
18	2
19	6
20	2
21	6
22	6
23	4
24	2
25	0
26	1
27	2
28	4
29	5
30	2
31	8
32	4
33	4
34	4
35	2
36	0
37	1
38	2
39	2
40	2
41	3
42	2
43	10
44	8
45	6
46	12
47	4
48	2
49	0
50	1
51	2
52	6
53	5
54	6
55	4
56	2
57	6
58	7
59	6
60	4
61	11
62	4
63	2
64	0
65	1
66	2
67	10
68	2
69	8
70	6
71	8
72	2
73	7
74	5
75	4
76	12
77	6
78	4
79	4
80	2
81	0
82	1
83	2
84	2
85	5
86	10
87	2
88	6
89	5
90	2
91	8
92	8
93	10
94	16
95	4
96	4
97	11
98	4
99	2
100	0
101	1
102	2
103	12

n	a(n)
1	0
2	1
3	2
4	0
5	1
6	2
7	4
8	2
9	0
10	1
11	2
12	2
13	5
14	4
15	2
16	0
17	1
18	2
19	6
20	2
21	6
22	6
23	4
24	2
25	0
26	1
27	2
28	4
29	5
30	2
31	8
32	4
33	4
34	4
35	2
36	0
37	1
38	2
39	2
40	2
41	3
42	2
43	10
44	8
45	6
46	12
47	4
48	2
49	0
50	1
51	2
52	6
53	5
54	6
55	4
56	2
57	6
58	7
59	6
60	4
61	11
62	4
63	2
64	0
65	1
66	2
67	10
68	2
69	8
70	6
71	8
72	2
73	7
74	5
75	4
76	12
77	6
78	4
79	4
80	2
81	0
82	1
83	2
84	2
85	5
86	10
87	2
88	6
89	5
90	2
91	8
92	8
93	10
94	16
95	4
96	4
97	11
98	4
99	2
100	0
101	1
102	2
103	12

n	a(n)
1	0
2	1
3	2
4	0
5	1
6	2
7	4
8	2
9	0
10	1
11	2
12	2
13	5
14	4
15	2
16	0
17	1
18	2
19	6
20	2
21	6
22	6
23	4
24	2
25	0
26	1
27	2
28	4
29	5
30	2
31	8
32	4
33	4
34	4
35	2
36	0
37	1
38	2
39	2
40	2
41	3
42	2
43	10
44	8
45	6
46	12
47	4
48	2
49	0
50	1
51	2
52	6
53	5
54	6
55	4
56	2
57	6
58	7
59	6
60	4
61	11
62	4
63	2
64	0
65	1
66	2
67	10
68	2
69	8
70	6
71	8
72	2
73	7
74	5
75	4
76	12
77	6
78	4
79	4
80	2
81	0
82	1
83	2
84	2
85	5
86	10
87	2
88	6
89	5
90	2
91	8
92	8
93	10
94	16
95	4
96	4
97	11
98	4
99	2
100	0
101	1
102	2
103	12