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.

A034021 Numbers that are primitively but not imprimitively represented by x^2+xy+y^2.

Table of values

n a(n)
1 0
2 1
3 3
4 7
5 13
6 19
7 21
8 31
9 37
10 39
11 43
12 57
13 61
14 67
15 73
16 79
17 91
18 93
19 97
20 103
21 109
22 111
23 127
24 129
25 133
26 139
27 151
28 157
29 163
30 181
31 183
32 193
33 199
34 201
35 211
36 217
37 219
38 223
39 229
40 237
41 241
42 247
43 259
44 271
45 273
46 277
47 283
48 291
49 301
50 307
51 309
52 313
53 327
54 331
55 337
56 349
57 367

List of values

[0, 1, 3, 7, 13, 19, 21, 31, 37, 39, 43, 57, 61, 67, 73, 79, 91, 93, 97, 103, 109, 111, 127, 129, 133, 139, 151, 157, 163, 181, 183, 193, 199, 201, 211, 217, 219, 223, 229, 237, 241, 247, 259, 271, 273, 277, 283, 291, 301, 307, 309, 313, 327, 331, 337, 349, 367]