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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.

A123678 Numbers n such that Lucas(prime(prime(n))) is prime, where Lucas(k) = A000032(k).

Table of values

n a(n)
1 2
2 3
3 4
4 5
5 6
6 20
7 30
8 117
9 136
10 1616
11 5313

List of values

[2, 3, 4, 5, 6, 20, 30, 117, 136, 1616, 5313]

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

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