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.

A138290 Numbers m such that 2^(m+1) - 2^k - 1 is composite for all 0 <= k < m.

Table of values

n a(n)
1 6
2 14
3 22
4 26
5 30
6 36
7 38
8 42
9 54
10 57
11 62
12 70
13 78
14 81
15 90
16 94
17 110
18 122
19 126
20 132
21 134
22 138
23 142
24 147
25 150
26 158
27 166
28 168
29 171
30 172
31 174
32 178
33 182
34 190
35 194
36 198
37 206
38 210
39 222
40 238
41 254
42 285
43 294
44 312
45 315
46 318
47 334
48 336
49 350
50 366
51 372
52 382
53 405
54 414
55 416
56 432

List of values

[6, 14, 22, 26, 30, 36, 38, 42, 54, 57, 62, 70, 78, 81, 90, 94, 110, 122, 126, 132, 134, 138, 142, 147, 150, 158, 166, 168, 171, 172, 174, 178, 182, 190, 194, 198, 206, 210, 222, 238, 254, 285, 294, 312, 315, 318, 334, 336, 350, 366, 372, 382, 405, 414, 416, 432]