A307236 - cp's OEIS frontend

A307236 One half of the number of primitive reduced binary quadratic forms for discriminant 4*A000037(n), for n >= 1.

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

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

cp's OEIS Frontend

A307236 One half of the number of primitive reduced binary quadratic forms for 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	4
6	2
7	4
8	2
9	2
10	5
11	4
12	4
13	1
14	2
15	6
16	2
17	6
18	6
19	4
20	6
21	4
22	2
23	4
24	5
25	6
26	8
27	4
28	4
29	10
30	4
31	7
32	2
33	8
34	6
35	3
36	4
37	10
38	8
39	6
40	12
41	4
42	4
43	4
44	8
45	6
46	5
47	6
48	8
49	6
50	6
51	12
52	6
53	10
54	11
55	4
56	4
57	6
58	8
59	10
60	2
61	8
62	10
63	8
64	8
65	7
66	8
67	8
68	12
69	6
70	8
71	16
72	6
73	10
74	2
75	6
76	12
77	10
78	4
79	12
80	5

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

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