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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.

A051967 Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 2.

Table of values

n a(n)
1 15
2 30
3 35
4 39
5 42
6 51
7 66
8 87
9 102
10 110
11 123
12 143
13 146
14 165
15 182
16 203
17 221
18 230
19 258
20 285
21 327
22 357
23 402
24 447
25 635
26 645
27 678
28 741
29 843
30 902
31 957
32 1085
33 1245
34 1298
35 1517
36 1533
37 2037
38 2045
39 2085
40 2397
41 2613
42 4245
43 4277
44 4773
45 5645
46 5957
47 6573
48 8333

List of values

[15, 30, 35, 39, 42, 51, 66, 87, 102, 110, 123, 143, 146, 165, 182, 203, 221, 230, 258, 285, 327, 357, 402, 447, 635, 645, 678, 741, 843, 902, 957, 1085, 1245, 1298, 1517, 1533, 2037, 2045, 2085, 2397, 2613, 4245, 4277, 4773, 5645, 5957, 6573, 8333]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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