A090558 Duplicate of A068704.
11, 421, 31, 41, 2551, 61, 71, 6481, 8191, 101
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.