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.

A243656 Positive integers primitively represented by x^2+3xy-y^2.

Table of values

n a(n)
1 1
2 3
3 9
4 13
5 17
6 23
7 27
8 29
9 39
10 43
11 51
12 53
13 61
14 69
15 79
16 81
17 87
18 101
19 103
20 107
21 113
22 117
23 127
24 129
25 131
26 139
27 153
28 157
29 159
30 173
31 179
32 181
33 183
34 191
35 199
36 207
37 211
38 221
39 233
40 237
41 243
42 251
43 257
44 261
45 263
46 269
47 277
48 283
49 289
50 299
51 303
52 309

List of values

[1, 3, 9, 13, 17, 23, 27, 29, 39, 43, 51, 53, 61, 69, 79, 81, 87, 101, 103, 107, 113, 117, 127, 129, 131, 139, 153, 157, 159, 173, 179, 181, 183, 191, 199, 207, 211, 221, 233, 237, 243, 251, 257, 261, 263, 269, 277, 283, 289, 299, 303, 309]