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 | 12 |
| 3 | 366 |
| 4 | 6150 |
| 5 | 847594 |
| 6 | 30312074 |
| 7 | 10289785215 |
| 8 | 609400419815 |
| 9 | 392670408857828 |
| 10 | 33926900616984192 |
| 11 | 35986649547821568686 |