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.

A386857 Numbers k such that both 9*2^k - 1 and 9*2^k + 1 are prime.

Table of values

n a(n)
1 1
2 3
3 7
4 43
5 63
6 211

List of values

[1, 3, 7, 43, 63, 211]

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

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