A000924 - cp's OEIS frontend

A000924 Class number of Q(sqrt(-n)), n squarefree.

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

[1, 1, 1, 2, 2, 1, 2, 1, 2, 4, 2, 4, 1, 4, 2, 3, 6, 6, 4, 3, 4, 4, 2, 2, 6, 4, 8, 4, 1, 4, 5, 2, 6, 4, 4, 2, 3, 6, 8, 8, 8, 1, 8, 4, 7, 4, 10, 8, 4, 5, 4, 3, 4, 10, 6, 12, 2, 4, 8, 8, 4, 14, 4, 5, 8, 6, 3, 6, 12, 8, 8, 8, 2, 6, 10, 10, 2, 5, 12, 4, 5, 4, 14, 8, 8, 3, 8, 4, 10, 8, 16, 14, 7, 8, 4, 6, 8, 10]

cp's OEIS Frontend

A000924 Class number of Q(sqrt(-n)), n squarefree.

Table of values

List of values

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

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

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