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.

A242666 Nonnegative integers of the form -x^2 + 4xy + 3y^2.

Table of values

n a(n)
1 0
2 3
3 6
4 7
5 12
6 14
7 19
8 24
9 27
10 28
11 31
12 38
13 47
14 48
15 54
16 56
17 59
18 62
19 63
20 75
21 76
22 83
23 87
24 94
25 96
26 103
27 108
28 111
29 112
30 118
31 124
32 126
33 131
34 139
35 147
36 150
37 152
38 159
39 166
40 167
41 171
42 174
43 175
44 188
45 192
46 199
47 203
48 206
49 216
50 222
51 223
52 224
53 227
54 236
55 243
56 248
57 251
58 252
59 259
60 262
61 271
62 278
63 279
64 283
65 294
66 300

List of values

[0, 3, 6, 7, 12, 14, 19, 24, 27, 28, 31, 38, 47, 48, 54, 56, 59, 62, 63, 75, 76, 83, 87, 94, 96, 103, 108, 111, 112, 118, 124, 126, 131, 139, 147, 150, 152, 159, 166, 167, 171, 174, 175, 188, 192, 199, 203, 206, 216, 222, 223, 224, 227, 236, 243, 248, 251, 252, 259, 262, 271, 278, 279, 283, 294, 300]