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 | 39 |
| 4 | 236 |
| 5 | 1479 |
| 6 | 9418 |
| 7 | 60492 |
| 8 | 390720 |
| 9 | 2534115 |
| 10 | 16489802 |
| 11 | 107594725 |
| 12 | 703681448 |
| 13 | 4611414244 |
| 14 | 30273029080 |
| 15 | 199045400424 |