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.

A357188 Numbers with (WLOG adjacent) prime indices x <= y such that the greatest prime factor of x is greater than the least prime factor of y.

Table of values

n a(n)
1 35
2 65
3 70
4 95
5 105
6 130
7 140
8 143
9 145
10 169
11 175
12 185
13 190
14 195
15 209
16 210
17 215
18 245
19 247
20 253
21 260
22 265
23 280
24 285
25 286
26 290
27 305
28 315
29 319
30 323
31 325
32 338
33 350
34 355
35 370
36 377
37 380
38 385
39 390
40 391
41 395
42 407
43 418
44 420
45 429
46 430
47 435
48 445
49 455
50 473
51 475
52 481
53 490

List of values

[35, 65, 70, 95, 105, 130, 140, 143, 145, 169, 175, 185, 190, 195, 209, 210, 215, 245, 247, 253, 260, 265, 280, 285, 286, 290, 305, 315, 319, 323, 325, 338, 350, 355, 370, 377, 380, 385, 390, 391, 395, 407, 418, 420, 429, 430, 435, 445, 455, 473, 475, 481, 490]

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

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