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.

A291689 Numbers n such that n^2 +- n +- 1 are all composite.

Table of values

n a(n)
1 23
2 37
3 43
4 52
5 73
6 74
7 82
8 88
9 92
10 98
11 107
12 108
13 109
14 113
15 122
16 123
17 124
18 128
19 129
20 133
21 136
22 137
23 152
24 157
25 166
26 178
27 179
28 183
29 198
30 201
31 202
32 205
33 208
34 211
35 212
36 213
37 214
38 217
39 222
40 223
41 224
42 227
43 228
44 229
45 235
46 238
47 239
48 243
49 250
50 251
51 252
52 253
53 254
54 255
55 256
56 257
57 261
58 262
59 270
60 271
61 274

List of values

[23, 37, 43, 52, 73, 74, 82, 88, 92, 98, 107, 108, 109, 113, 122, 123, 124, 128, 129, 133, 136, 137, 152, 157, 166, 178, 179, 183, 198, 201, 202, 205, 208, 211, 212, 213, 214, 217, 222, 223, 224, 227, 228, 229, 235, 238, 239, 243, 250, 251, 252, 253, 254, 255, 256, 257, 261, 262, 270, 271, 274]

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

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