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.

A247132 Numbers k such that 2k - 1 divides 2^k + 1.

Table of values

n a(n)
1 1
2 194997
3 1463649
4 1957025
5 4657005
6 6464145
7 17214725
8 70930629
9 76938345
10 319359365
11 336837501
12 429872625
13 486213525
14 1343289717
15 1831683645
16 2163016845
17 2430979425
18 2950546137
19 3463374005
20 5031564525
21 5608791441
22 8993704797
23 9596401485
24 12556945401
25 13492461125
26 14559291285
27 18429009725

List of values

[1, 194997, 1463649, 1957025, 4657005, 6464145, 17214725, 70930629, 76938345, 319359365, 336837501, 429872625, 486213525, 1343289717, 1831683645, 2163016845, 2430979425, 2950546137, 3463374005, 5031564525, 5608791441, 8993704797, 9596401485, 12556945401, 13492461125, 14559291285, 18429009725]