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.

A328251 Row 1 of array A328250: numbers n whose k-th arithmetic derivative is never squarefree for any k >= 0.

Table of values

n a(n)
1 4
2 8
3 12
4 16
5 20
6 24
7 27
8 28
9 32
10 36
11 40
12 44
13 48
14 52
15 54
16 56
17 60
18 64
19 68
20 72
21 76
22 80
23 81
24 84
25 88
26 92
27 96
28 100
29 104
30 108
31 112
32 116
33 120
34 124
35 128
36 132
37 135
38 136
39 140
40 144
41 148
42 152
43 156
44 160
45 162
46 164
47 168
48 172
49 176
50 180
51 184
52 188
53 189
54 192
55 196
56 200
57 204
58 208
59 212
60 216
61 220
62 224
63 225
64 228
65 232
66 236
67 240
68 243
69 244
70 248
71 250
72 252
73 256
74 260
75 264
76 268
77 270
78 272

List of values

[4, 8, 12, 16, 20, 24, 27, 28, 32, 36, 40, 44, 48, 52, 54, 56, 60, 64, 68, 72, 76, 80, 81, 84, 88, 92, 96, 100, 104, 108, 112, 116, 120, 124, 128, 132, 135, 136, 140, 144, 148, 152, 156, 160, 162, 164, 168, 172, 176, 180, 184, 188, 189, 192, 196, 200, 204, 208, 212, 216, 220, 224, 225, 228, 232, 236, 240, 243, 244, 248, 250, 252, 256, 260, 264, 268, 270, 272]