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.

A336701 Numbers k for which A000265(1+A000265(sigma(k))) is equal to A000265(1+k).

Table of values

n a(n)
1 1
2 3
3 7
4 15
5 31
6 127
7 1023
8 8191
9 34335
10 57855
11 131071
12 524287
13 2147483647

List of values

[1, 3, 7, 15, 31, 127, 1023, 8191, 34335, 57855, 131071, 524287, 2147483647]

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

Content is available under The OEIS End-User License Agreement.