A051921 Duplicate of A023998.
1, 1, 3, 16, 131, 1496, 22482, 426833, 9934563, 277006192, 9085194458
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.