A250236 - cp's OEIS frontend

A250236 Fundamental discriminants d such that the real quadratic field Q(sqrt(d)) and the complex quadratic field Q(sqrt(-3d)) both have cyclic 3-class groups of order 3.

n	a(n)
1	229
2	257
3	316
4	321
5	469
6	473
7	568
8	697
9	761
10	785
11	892
12	940
13	985
14	993
15	1016
16	1229
17	1304
18	1345
19	1384
20	1436
21	1489
22	1509
23	1708
24	1765
25	1929
26	1937
27	2024
28	2089
29	2101
30	2177
31	2233
32	2296
33	2505
34	2557
35	2589
36	2677
37	2920
38	2941
39	2981
40	2993

[229, 257, 316, 321, 469, 473, 568, 697, 761, 785, 892, 940, 985, 993, 1016, 1229, 1304, 1345, 1384, 1436, 1489, 1509, 1708, 1765, 1929, 1937, 2024, 2089, 2101, 2177, 2233, 2296, 2505, 2557, 2589, 2677, 2920, 2941, 2981, 2993]

cp's OEIS Frontend

A250236 Fundamental discriminants d such that the real quadratic field Q(sqrt(d)) and the complex quadratic field Q(sqrt(-3d)) both have cyclic 3-class groups of order 3.

Table of values

List of values