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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.

A093167 Primes of the form 20*R_k + 7, where R_k is the repunit (A002275) of length k.

Table of values

n a(n)
1 7
2 227
3 222222227
4 222222222222227
5 2222222222222222222222222227
6 2222222222222222222222222222222222222222222222222222222222222227

List of values

[7, 227, 222222227, 222222222222227, 2222222222222222222222222227, 2222222222222222222222222222222222222222222222222222222222222227]

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

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