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.

A328223 Numbers k such that both k and k+4 are sums of two squares.

Table of values

n a(n)
1 0
2 1
3 4
4 5
5 9
6 13
7 16
8 25
9 32
10 36
11 37
12 41
13 45
14 49
15 61
16 64
17 68
18 81
19 85
20 97
21 100
22 109
23 113
24 117
25 121
26 144
27 145
28 149
29 153
30 160
31 169
32 181
33 193
34 196
35 208
36 221
37 225
38 229
39 241
40 256
41 257
42 261
43 265
44 277
45 288
46 289
47 292
48 313
49 320
50 324
51 333
52 349
53 356
54 361
55 365
56 369
57 373
58 388
59 397
60 400

List of values

[0, 1, 4, 5, 9, 13, 16, 25, 32, 36, 37, 41, 45, 49, 61, 64, 68, 81, 85, 97, 100, 109, 113, 117, 121, 144, 145, 149, 153, 160, 169, 181, 193, 196, 208, 221, 225, 229, 241, 256, 257, 261, 265, 277, 288, 289, 292, 313, 320, 324, 333, 349, 356, 361, 365, 369, 373, 388, 397, 400]

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

Content is available under The OEIS End-User License Agreement.