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 | 512 |
| 2 | 3815 |
| 3 | 50805 |
| 4 | 452377 |
| 5 | 2779906 |
| 6 | 12895977 |
| 7 | 48400258 |
| 8 | 154315776 |
| 9 | 432655358 |
| 10 | 1093685273 |
| 11 | 2539243268 |
| 12 | 5491371251 |
| 13 | 11182788770 |
| 14 | 21629362253 |
| 15 | 40008716648 |
| 16 | 71173490664 |
| 17 | 122332454247 |
| 18 | 203937787267 |
| 19 | 330822261551 |