A307359 - cp's OEIS frontend

A307359 Class number a(n) of indefinite binary quadratic forms with discriminant 4*A000037(n) for n >= 1.

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

[1, 2, 1, 2, 2, 2, 2, 2, 2, 1, 2, 4, 1, 2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 1, 4, 2, 2, 2, 4, 4, 3, 2, 4, 4, 1, 4, 2, 2, 2, 2, 2, 4, 2, 4, 2, 1, 2, 4, 4, 2, 2, 2, 4, 1, 2, 4, 2, 4, 2, 2, 2, 4, 2, 4, 1, 2, 4, 2, 2, 4, 6, 4, 4, 2, 4, 2, 2, 4, 4, 1, 4, 4, 2, 2, 2, 4, 4, 1, 2, 8, 3, 4, 2, 4, 4, 2]

cp's OEIS Frontend

A307359 Class number a(n) of indefinite binary quadratic forms with discriminant 4*A000037(n) for n >= 1.

Table of values

List of values

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

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

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