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.

A316621 Numbers of the form x^2 + 9*x*y + y^2, 0 <= x <= y.

Table of values

n a(n)
1 0
2 1
3 4
4 9
5 11
6 16
7 23
8 25
9 36
10 37
11 44
12 49
13 53
14 64
15 67
16 71
17 81
18 91
19 92
20 99
21 100
22 113
23 119
24 121
25 133
26 137
27 144
28 148
29 163
30 169
31 176
32 179
33 191
34 196
35 207
36 212
37 221
38 225
39 247
40 253
41 256
42 268
43 275
44 284
45 287
46 289
47 317
48 323
49 324
50 331
51 333
52 361
53 364
54 368
55 379
56 389
57 396
58 400
59 401
60 407
61 421
62 427
63 441
64 443
65 449

List of values

[0, 1, 4, 9, 11, 16, 23, 25, 36, 37, 44, 49, 53, 64, 67, 71, 81, 91, 92, 99, 100, 113, 119, 121, 133, 137, 144, 148, 163, 169, 176, 179, 191, 196, 207, 212, 221, 225, 247, 253, 256, 268, 275, 284, 287, 289, 317, 323, 324, 331, 333, 361, 364, 368, 379, 389, 396, 400, 401, 407, 421, 427, 441, 443, 449]