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.

A233415 Odd numbers k such that 2k-1 divides 2^k-1.

Table of values

n a(n)
1 1
2 763425
3 10888425
4 40068105
5 142086921
6 191345625
7 462784725
8 468545025
9 552451809
10 595018305
11 683993905
12 956917125
13 1013987349
14 1024992045
15 1567781325
16 1581567885
17 3094868865
18 3312888345
19 4839991545
20 4882263477
21 5064476505
22 5613455925
23 7303900125

List of values

[1, 763425, 10888425, 40068105, 142086921, 191345625, 462784725, 468545025, 552451809, 595018305, 683993905, 956917125, 1013987349, 1024992045, 1567781325, 1581567885, 3094868865, 3312888345, 4839991545, 4882263477, 5064476505, 5613455925, 7303900125]

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

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