cp's OEIS Frontend

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.

A031396 Numbers k such that Pell equation x^2 - k*y^2 = -1 is soluble.

Table of values

n a(n)
1 1
2 2
3 5
4 10
5 13
6 17
7 26
8 29
9 37
10 41
11 50
12 53
13 58
14 61
15 65
16 73
17 74
18 82
19 85
20 89
21 97
22 101
23 106
24 109
25 113
26 122
27 125
28 130
29 137
30 145
31 149
32 157
33 170
34 173
35 181
36 185
37 193
38 197
39 202
40 218
41 226
42 229
43 233
44 241
45 250
46 257
47 265
48 269
49 274
50 277
51 281
52 290
53 293
54 298

List of values

[1, 2, 5, 10, 13, 17, 26, 29, 37, 41, 50, 53, 58, 61, 65, 73, 74, 82, 85, 89, 97, 101, 106, 109, 113, 122, 125, 130, 137, 145, 149, 157, 170, 173, 181, 185, 193, 197, 202, 218, 226, 229, 233, 241, 250, 257, 265, 269, 274, 277, 281, 290, 293, 298]