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) |
|---|---|
| 0 | 192 |
| 1 | 420 |
| 2 | 1494 |
| 3 | 7686 |
| 4 | 49218 |
| 5 | 358710 |
| 6 | 2838234 |
| 7 | 23736846 |
| 8 | 206418978 |
| 9 | 1846772550 |
| 10 | 16877063274 |
| 11 | 156755849406 |
| 12 | 1474458820338 |
| 13 | 14008019814390 |
| 14 | 134151794416314 |
| 15 | 1293111887664366 |
| 16 | 12531051927887298 |
| 17 | 121969635737464230 |
| 18 | 1191547891970937354 |
| 19 | 11676481763813277726 |