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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A306300 Discriminant D of real quadratic number field Q(sqrt(D)) associated with fundamental discriminant d = A003658(n).

Table of values

n a(n)
1 1
2 5
3 2
4 3
5 13
6 17
7 21
8 6
9 7
10 29
11 33
12 37
13 10
14 41
15 11
16 53
17 14
18 57
19 15
20 61
21 65
22 69
23 73
24 19
25 77
26 85
27 22
28 89
29 23
30 93
31 97
32 101
33 26
34 105
35 109
36 113
37 30
38 31
39 129
40 133
41 34
42 137
43 35
44 141
45 145
46 149
47 38
48 39
49 157
50 161
51 165
52 42
53 43
54 173
55 177
56 181
57 46
58 185
59 47
60 193
61 197

List of values

[1, 5, 2, 3, 13, 17, 21, 6, 7, 29, 33, 37, 10, 41, 11, 53, 14, 57, 15, 61, 65, 69, 73, 19, 77, 85, 22, 89, 23, 93, 97, 101, 26, 105, 109, 113, 30, 31, 129, 133, 34, 137, 35, 141, 145, 149, 38, 39, 157, 161, 165, 42, 43, 173, 177, 181, 46, 185, 47, 193, 197]