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.

A257021 Numbers whose quarter-square representation consists of four terms.

Table of values

n a(n)
1 255
2 271
3 287
4 304
5 321
6 339
7 357
8 376
9 395
10 399
11 415
12 419
13 435
14 439
15 456
16 460
17 477
18 481
19 499
20 503
21 521
22 525
23 544
24 548
25 567
26 571
27 575
28 591
29 595
30 599
31 615
32 619
33 623
34 640
35 644
36 648
37 665
38 669
39 673
40 691
41 695
42 699
43 717
44 721
45 725
46 744
47 748
48 752
49 771
50 775
51 779
52 799

List of values

[255, 271, 287, 304, 321, 339, 357, 376, 395, 399, 415, 419, 435, 439, 456, 460, 477, 481, 499, 503, 521, 525, 544, 548, 567, 571, 575, 591, 595, 599, 615, 619, 623, 640, 644, 648, 665, 669, 673, 691, 695, 699, 717, 721, 725, 744, 748, 752, 771, 775, 779, 799]