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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.

A153601 Numbers representable as Phi(k,2), the k-th cyclotomic polynomial evaluated at 2, for some k>0.

Table of values

n a(n)
1 1
2 3
3 5
4 7
5 11
6 13
7 17
8 31
9 43
10 57
11 73
12 127
13 151
14 205
15 241
16 257
17 331
18 683
19 2047
20 2359
21 2731
22 3277
23 4033
24 5419
25 8191
26 43691
27 61681
28 65281
29 65537
30 80581
31 131071
32 174763
33 261633
34 262657
35 524287
36 599479
37 838861
38 1016801
39 1082401
40 1397419
41 2796203

List of values

[1, 3, 5, 7, 11, 13, 17, 31, 43, 57, 73, 127, 151, 205, 241, 257, 331, 683, 2047, 2359, 2731, 3277, 4033, 5419, 8191, 43691, 61681, 65281, 65537, 80581, 131071, 174763, 261633, 262657, 524287, 599479, 838861, 1016801, 1082401, 1397419, 2796203]

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

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