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 | 7 |
| 3 | 47 |
| 4 | 309 |
| 5 | 2412 |
| 6 | 19622 |
| 7 | 166212 |
| 8 | 1440496 |
| 9 | 12712315 |
| 10 | 113764040 |
| 11 | 1029518338 |
| 12 | 9401997001 |