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.

A243189 Nonnegative numbers of the form 2x^2 + 6xy - 3y^2.

Table of values

n a(n)
1 0
2 2
3 5
4 8
5 17
6 18
7 20
8 32
9 33
10 42
11 45
12 50
13 53
14 68
15 72
16 77
17 80
18 98
19 105
20 113
21 122
22 125
23 128
24 132
25 137
26 153
27 162
28 168
29 170
30 173
31 177
32 180
33 197
34 200
35 212
36 213
37 218
38 233
39 242
40 245
41 257
42 258
43 272
44 288
45 293
46 297
47 305
48 308
49 317
50 320
51 330
52 338
53 353
54 357
55 362
56 378

List of values

[0, 2, 5, 8, 17, 18, 20, 32, 33, 42, 45, 50, 53, 68, 72, 77, 80, 98, 105, 113, 122, 125, 128, 132, 137, 153, 162, 168, 170, 173, 177, 180, 197, 200, 212, 213, 218, 233, 242, 245, 257, 258, 272, 288, 293, 297, 305, 308, 317, 320, 330, 338, 353, 357, 362, 378]