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.

A247881 Numbers of the form x^2 + 13*y^2.

Table of values

n a(n)
1 0
2 1
3 4
4 9
5 13
6 14
7 16
8 17
9 22
10 25
11 29
12 36
13 38
14 49
15 52
16 53
17 56
18 61
19 62
20 64
21 68
22 77
23 81
24 88
25 94
26 100
27 101
28 113
29 116
30 117
31 118
32 121
33 126
34 133
35 134
36 142
37 144
38 152
39 153
40 157
41 166
42 169
43 173
44 181
45 182
46 196
47 198
48 208
49 209
50 212
51 217
52 221
53 224
54 225
55 233
56 238
57 244
58 248
59 256
60 257
61 261
62 269

List of values

[0, 1, 4, 9, 13, 14, 16, 17, 22, 25, 29, 36, 38, 49, 52, 53, 56, 61, 62, 64, 68, 77, 81, 88, 94, 100, 101, 113, 116, 117, 118, 121, 126, 133, 134, 142, 144, 152, 153, 157, 166, 169, 173, 181, 182, 196, 198, 208, 209, 212, 217, 221, 224, 225, 233, 238, 244, 248, 256, 257, 261, 269]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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