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.

A274555 Nonsquare n such that n*(n+1)/2 is the sum of two nonzero squares.

Table of values

n a(n)
1 17
2 40
3 52
4 72
5 73
6 80
7 89
8 97
9 116
10 136
11 145
12 148
13 180
14 193
15 232
16 233
17 241
18 244
19 260
20 288
21 292
22 305
23 313
24 337
25 360
26 369
27 388
28 404
29 409
30 424
31 449
32 457
33 481
34 520
35 521
36 544
37 548
38 577
39 584
40 585
41 592
42 612
43 628
44 640
45 656
46 673
47 697
48 724
49 745
50 772
51 793
52 800

List of values

[17, 40, 52, 72, 73, 80, 89, 97, 116, 136, 145, 148, 180, 193, 232, 233, 241, 244, 260, 288, 292, 305, 313, 337, 360, 369, 388, 404, 409, 424, 449, 457, 481, 520, 521, 544, 548, 577, 584, 585, 592, 612, 628, 640, 656, 673, 697, 724, 745, 772, 793, 800]