A049379 Erroneous version of A003094.
1, 1, 1, 2, 6, 20, 99, 646, 5918
Offset: 0
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.