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.

A102458 Numbers n with A102457(n) != lpf(n-1) (lpf = least prime factor).

Table of values

n a(n)
1 2
2 152
3 158
4 338
5 368
6 380
7 524
8 542
9 548
10 608
11 614
12 662
13 674
14 692
15 998
16 1052
17 1094
18 1110
19 1154
20 1182
21 1202
22 1238
23 1292
24 1322
25 1328
26 1472
27 1532
28 1544
29 1598
30 1622
31 1628
32 1664
33 1862
34 1934
35 1952
36 2018
37 2030
38 2084
39 2132
40 2240
41 2340
42 2342
43 2352
44 2468
45 2474

List of values

[2, 152, 158, 338, 368, 380, 524, 542, 548, 608, 614, 662, 674, 692, 998, 1052, 1094, 1110, 1154, 1182, 1202, 1238, 1292, 1322, 1328, 1472, 1532, 1544, 1598, 1622, 1628, 1664, 1862, 1934, 1952, 2018, 2030, 2084, 2132, 2240, 2340, 2342, 2352, 2468, 2474]

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

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