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 | 1 |
| 2 | 14 |
| 3 | 215 |
| 4 | 2582 |
| 5 | 31380 |
| 6 | 379788 |
| 7 | 4590696 |
| 8 | 55723864 |
| 9 | 676981428 |
| 10 | 8220515870 |
| 11 | 99804610105 |
| 12 | 1211737645986 |
| 13 | 14712070032443 |
| 14 | 178624535138225 |
| 15 | 2168744883228649 |
| 16 | 26331490124843751 |
| 17 | 319699729136522144 |