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.

A066681 Badly sieved numbers (A066680) which are not primes.

Table of values

n a(n)
1 8
2 12
3 18
4 27
5 30
6 45
7 50
8 63
9 70
10 75
11 80
12 98
13 105
14 112
15 125
16 128
17 147
18 154
19 165
20 168
21 175
22 176
23 182
24 192
25 195
26 208
27 220
28 231
29 242
30 245
31 260
32 264
33 273
34 275
35 286
36 312
37 325
38 338
39 340
40 343
41 357
42 363
43 374
44 380
45 385
46 396
47 399
48 408

List of values

[8, 12, 18, 27, 30, 45, 50, 63, 70, 75, 80, 98, 105, 112, 125, 128, 147, 154, 165, 168, 175, 176, 182, 192, 195, 208, 220, 231, 242, 245, 260, 264, 273, 275, 286, 312, 325, 338, 340, 343, 357, 363, 374, 380, 385, 396, 399, 408]