A106030 - cp's OEIS frontend

A106030 a(n) is the number of orbits under the action of GL_2[Z] on the primitive binary quadratic forms of discriminant D, where D=m if m=1 (mod 4), D=4*m otherwise and m>1 is the n-th squarefree number.

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

[1, 2, 1, 2, 2, 2, 2, 1, 2, 4, 1, 2, 2, 2, 2, 2, 1, 4, 2, 2, 3, 4, 1, 2, 4, 1, 4, 2, 2, 2, 4, 1, 4, 2, 2, 2, 1, 2, 2, 4, 2, 2, 4, 2, 1, 2, 2, 4, 4, 3, 2, 2, 2, 4, 1, 4, 2, 2, 4, 1]

cp's OEIS Frontend

A106030 a(n) is the number of orbits under the action of GL_2[Z] on the primitive binary quadratic forms of discriminant D, where D=m if m=1 (mod 4), D=4*m otherwise and m>1 is the n-th squarefree number.

Table of values

List of values

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

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

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