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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.

A093177 Primes of the form 90*R_k + 1, where R_k is the repunit (A002275) of length k.

Table of values

n a(n)
1 991
2 99991
3 9999991
4 999999999999999999999999999999991
5 999999999999999999999999999999999999999999991
6 999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999991

List of values

[991, 99991, 9999991, 999999999999999999999999999999991, 999999999999999999999999999999999999999999991, 999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999991]

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

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