A005474 - cp's OEIS frontend

A005474 Class numbers of the real quadratic fields Q(sqrt(A005473(n))).

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

[1, 1, 1, 1, 1, 3, 1, 3, 5, 3, 3, 7, 3, 5, 7, 3, 3, 5, 9, 7, 3, 5, 5, 15, 9, 19, 5, 13, 9, 9, 5, 19, 9, 5, 7, 15, 13, 9, 9, 15, 25, 13, 9, 27, 19, 15, 21, 7, 13, 11, 23, 9, 13, 13, 11, 33, 15, 25, 23, 15, 13, 29, 21, 17, 43, 35, 27, 33, 17, 17, 27, 45, 11, 63, 15, 31, 17, 15, 33, 15, 31, 31]

cp's OEIS Frontend

A005474 Class numbers of the real quadratic fields Q(sqrt(A005473(n))).

Table of values

List of values

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

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

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