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.

A035256 Positive integers of the form x^2+3xy-y^2.

Table of values

n a(n)
1 1
2 3
3 4
4 9
5 12
6 13
7 16
8 17
9 23
10 25
11 27
12 29
13 36
14 39
15 43
16 48
17 49
18 51
19 52
20 53
21 61
22 64
23 68
24 69
25 75
26 79
27 81
28 87
29 92
30 100
31 101
32 103
33 107
34 108
35 113
36 116
37 117
38 121
39 127
40 129
41 131
42 139
43 144
44 147
45 153
46 156
47 157
48 159
49 169
50 172
51 173
52 179
53 181
54 183
55 191
56 192
57 196
58 199
59 204
60 207
61 208
62 211
63 212
64 221
65 225
66 233
67 237
68 243
69 244
70 251

List of values

[1, 3, 4, 9, 12, 13, 16, 17, 23, 25, 27, 29, 36, 39, 43, 48, 49, 51, 52, 53, 61, 64, 68, 69, 75, 79, 81, 87, 92, 100, 101, 103, 107, 108, 113, 116, 117, 121, 127, 129, 131, 139, 144, 147, 153, 156, 157, 159, 169, 172, 173, 179, 181, 183, 191, 192, 196, 199, 204, 207, 208, 211, 212, 221, 225, 233, 237, 243, 244, 251]