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.

A020684 Numbers of form 4 x^2 + 9 y^2.

Table of values

n a(n)
1 0
2 4
3 9
4 13
5 16
6 25
7 36
8 40
9 45
10 52
11 64
12 72
13 73
14 81
15 85
16 97
17 100
18 109
19 117
20 136
21 144
22 145
23 148
24 153
25 160
26 180
27 181
28 196
29 205
30 208
31 225
32 229
33 232
34 241
35 244
36 256
37 261
38 265
39 277
40 288
41 289
42 292
43 324
44 325
45 328
46 333
47 337
48 340
49 360
50 369
51 388
52 400
53 405
54 409
55 421
56 424
57 436
58 441

List of values

[0, 4, 9, 13, 16, 25, 36, 40, 45, 52, 64, 72, 73, 81, 85, 97, 100, 109, 117, 136, 144, 145, 148, 153, 160, 180, 181, 196, 205, 208, 225, 229, 232, 241, 244, 256, 261, 265, 277, 288, 289, 292, 324, 325, 328, 333, 337, 340, 360, 369, 388, 400, 405, 409, 421, 424, 436, 441]