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.

A379307 Positive integers whose prime indices include no squarefree numbers.

Table of values

n a(n)
1 1
2 7
3 19
4 23
5 37
6 49
7 53
8 61
9 71
10 89
11 97
12 103
13 107
14 131
15 133
16 151
17 161
18 173
19 193
20 197
21 223
22 227
23 229
24 239
25 251
26 259
27 263
28 281
29 307
30 311
31 337
32 343
33 359
34 361
35 371
36 379
37 383
38 409
39 419
40 427
41 433
42 437
43 457
44 463
45 479
46 497
47 503
48 521
49 523
50 529
51 541
52 569
53 593
54 613
55 623

List of values

[1, 7, 19, 23, 37, 49, 53, 61, 71, 89, 97, 103, 107, 131, 133, 151, 161, 173, 193, 197, 223, 227, 229, 239, 251, 259, 263, 281, 307, 311, 337, 343, 359, 361, 371, 379, 383, 409, 419, 427, 433, 437, 457, 463, 479, 497, 503, 521, 523, 529, 541, 569, 593, 613, 623]