A034805 Erroneous version of A000022.
1, 0, 1, 1, 2, 2, 6, 9, 20, 37, 86, 183, 419
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.