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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.

A219978 Numbers k (>= 1) such that A007781(k-1) = k^k - (k-1)^(k-1) is semiprime.

Table of values

n a(n)
1 5
2 6
3 13
4 16
5 18
6 21
7 22
8 28
9 29
10 37
11 46
12 60
13 71
14 84

List of values

[5, 6, 13, 16, 18, 21, 22, 28, 29, 37, 46, 60, 71, 84]

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

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