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.
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 149 |
| 3 | 1925 |
| 4 | 13808 |
| 5 | 49703 |
| 6 | 2458886 |
| 7 | 9470345 |
| 8 | 186557267 |
| 9 | 523551503 |
| 10 | 191278379840 |
| 11 | 4368196101672 |