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.

A080666 Numbers k such that k^2 + 1 and k^2 - 1 are not squarefree.

Table of values

n a(n)
1 7
2 41
3 43
4 57
5 82
6 93
7 99
8 107
9 117
10 118
11 143
12 157
13 168
14 193
15 207
16 239
17 243
18 251
19 257
20 293
21 307
22 327
23 332
24 343
25 357
26 368
27 393
28 407
29 437
30 443
31 457
32 493
33 507
34 515
35 532
36 540
37 543
38 557
39 568
40 577
41 593
42 606
43 607
44 643
45 657
46 693
47 707
48 743
49 746
50 757
51 775
52 776
53 782

List of values

[7, 41, 43, 57, 82, 93, 99, 107, 117, 118, 143, 157, 168, 193, 207, 239, 243, 251, 257, 293, 307, 327, 332, 343, 357, 368, 393, 407, 437, 443, 457, 493, 507, 515, 532, 540, 543, 557, 568, 577, 593, 606, 607, 643, 657, 693, 707, 743, 746, 757, 775, 776, 782]