A123464 Duplicate of A011782.
1, 2, 4, 8, 16, 32, 64, 128, 256, 512
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.