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.

A291167 Numbers k such that psi(k) is a perfect square where psi(k) = A001615(k).

Table of values

n a(n)
1 1
2 3
3 18
4 20
5 22
6 27
7 60
8 66
9 70
10 72
11 80
12 88
13 92
14 94
15 99
16 115
17 119
18 162
19 170
20 210
21 212
22 214
23 217
24 240
25 243
26 252
27 264
28 265
29 276
30 280
31 282
32 288
33 308
34 310
35 315
36 320
37 322
38 345
39 352
40 357
41 368
42 376
43 382
44 385
45 423
46 497
47 500
48 510
49 517
50 527
51 540
52 594
53 596
54 612
55 636
56 637
57 642
58 648
59 651
60 679
61 680
62 710
63 725
64 742

List of values

[1, 3, 18, 20, 22, 27, 60, 66, 70, 72, 80, 88, 92, 94, 99, 115, 119, 162, 170, 210, 212, 214, 217, 240, 243, 252, 264, 265, 276, 280, 282, 288, 308, 310, 315, 320, 322, 345, 352, 357, 368, 376, 382, 385, 423, 497, 500, 510, 517, 527, 540, 594, 596, 612, 636, 637, 642, 648, 651, 679, 680, 710, 725, 742]

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

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