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.

A355527 Squarefree numbers having at least one pair of consecutive prime factors. Numbers n such that the minimal difference between adjacent prime indices of n is 1.

Table of values

n a(n)
1 6
2 15
3 30
4 35
5 42
6 66
7 70
8 77
9 78
10 102
11 105
12 114
13 138
14 143
15 154
16 165
17 174
18 186
19 195
20 210
21 221
22 222
23 231
24 246
25 255
26 258
27 282
28 285
29 286
30 318
31 323
32 330
33 345
34 354
35 366
36 385
37 390
38 402
39 426
40 429
41 435
42 437
43 438
44 442
45 455
46 462
47 465
48 474
49 498
50 510
51 534
52 546
53 555
54 570

List of values

[6, 15, 30, 35, 42, 66, 70, 77, 78, 102, 105, 114, 138, 143, 154, 165, 174, 186, 195, 210, 221, 222, 231, 246, 255, 258, 282, 285, 286, 318, 323, 330, 345, 354, 366, 385, 390, 402, 426, 429, 435, 437, 438, 442, 455, 462, 465, 474, 498, 510, 534, 546, 555, 570]

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

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