A093168 Primes of the form 30*R_k + 7, where R_k is the repunit (A002275) of length k.
7, 37, 337, 333337, 3333333333333333333333333333333333333333333337
Offset: 1
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.
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