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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.

A069179 Least number X such that for each k in (0 to n-1), 2^k*X-1 and 2^k*X+1 are primes. That is, there are N twin primes, each the "double" of the previous.

Table of values

n a(n)
1 4
2 6
3 211050
4 253680
5 41887255410
6 73768891456260

List of values

[4, 6, 211050, 253680, 41887255410, 73768891456260]

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

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