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.

A243190 Nonnegative numbers of the form -2x^2+6xy+3y^2.

Table of values

n a(n)
1 0
2 3
3 7
4 12
5 22
6 27
7 28
8 30
9 43
10 48
11 55
12 63
13 67
14 70
15 75
16 88
17 102
18 103
19 108
20 112
21 118
22 120
23 127
24 142
25 147
26 163
27 172
28 175
29 183
30 187
31 192
32 198
33 220
34 223
35 238
36 243
37 252
38 255
39 262
40 268
41 270
42 280
43 283
44 295
45 300
46 307
47 318
48 327
49 343
50 352
51 355
52 358
53 363
54 367
55 382

List of values

[0, 3, 7, 12, 22, 27, 28, 30, 43, 48, 55, 63, 67, 70, 75, 88, 102, 103, 108, 112, 118, 120, 127, 142, 147, 163, 172, 175, 183, 187, 192, 198, 220, 223, 238, 243, 252, 255, 262, 268, 270, 280, 283, 295, 300, 307, 318, 327, 343, 352, 355, 358, 363, 367, 382]