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.

A253278 Congruentfree numbers: positive integers that are not divisible by any congruent number (A003273).

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 8
6 9
7 11
8 16
9 17
10 19
11 27
12 32
13 33
14 43
15 51
16 57
17 59
18 64
19 67
20 73
21 81
22 83
23 89
24 97
25 99
26 107
27 113
28 121
29 128
30 129
31 131
32 139
33 146
34 153
35 163
36 171
37 177
38 178
39 179
40 187
41 193
42 201
43 209
44 211
45 227
46 233
47 241
48 243
49 249
50 251
51 256
52 267
53 281
54 283
55 289
56 292
57 297
58 307

List of values

[1, 2, 3, 4, 8, 9, 11, 16, 17, 19, 27, 32, 33, 43, 51, 57, 59, 64, 67, 73, 81, 83, 89, 97, 99, 107, 113, 121, 128, 129, 131, 139, 146, 153, 163, 171, 177, 178, 179, 187, 193, 201, 209, 211, 227, 233, 241, 243, 249, 251, 256, 267, 281, 283, 289, 292, 297, 307]