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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.

A339973 Numbers k for which A019565(2k)-1 is a multiple of A000265(phi(A019565(2k))).

Table of values

n a(n)
1 0
2 1
3 2
4 3
5 4
6 8
7 16
8 20
9 32
10 33
11 34
12 35
13 38
14 41
15 50
16 56
17 64
18 128
19 176
20 256
21 259
22 290
23 512
24 1024
25 2048
26 2056
27 2081
28 2089
29 2096
30 2180
31 4096
32 4130
33 8192
34 9218
35 16384
36 18436
37 32768
38 65536
39 131072
40 131140
41 262144
42 279552
43 524288
44 524308
45 524546
46 1048576
47 1048736
48 2097152
49 4194304
50 4194352
51 4194420
52 4196656
53 4202499
54 8388608

List of values

[0, 1, 2, 3, 4, 8, 16, 20, 32, 33, 34, 35, 38, 41, 50, 56, 64, 128, 176, 256, 259, 290, 512, 1024, 2048, 2056, 2081, 2089, 2096, 2180, 4096, 4130, 8192, 9218, 16384, 18436, 32768, 65536, 131072, 131140, 262144, 279552, 524288, 524308, 524546, 1048576, 1048736, 2097152, 4194304, 4194352, 4194420, 4196656, 4202499, 8388608]

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

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