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.

A006549 Numbers k such that k and k+1 are prime powers.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 7
6 8
7 16
8 31
9 127
10 256
11 8191
12 65536
13 131071
14 524287
15 2147483647
16 2305843009213693951
17 618970019642690137449562111
18 162259276829213363391578010288127
19 170141183460469231731687303715884105727

List of values

[1, 2, 3, 4, 7, 8, 16, 31, 127, 256, 8191, 65536, 131071, 524287, 2147483647, 2305843009213693951, 618970019642690137449562111, 162259276829213363391578010288127, 170141183460469231731687303715884105727]

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

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