A257005 - cp's OEIS frontend

A257005 Irregular triangle read by rows: period lengths of periods of Zagier-reduced binary quadratic forms with discriminants D(n) = A079896(n).

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

[1, 2, 2, 1, 3, 5, 4, 1, 3, 1, 4, 2, 5, 2, 5, 4, 2, 1, 6, 4, 7, 6, 4, 11, 6, 3, 5, 1, 1, 6, 2, 2, 1, 10, 3, 7, 8, 2, 9, 7, 6, 3, 2, 1, 11, 9, 7, 8, 5, 8, 2, 8, 4, 2, 21, 10, 7, 7, 1, 8, 4, 2, 1, 10, 4, 3, 1, 9, 5, 12, 6]

cp's OEIS Frontend

A257005 Irregular triangle read by rows: period lengths of periods of Zagier-reduced binary quadratic forms with discriminants D(n) = A079896(n).

Table of values

List of values

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

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

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