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 | 24 |
| 2 | 576 |
| 3 | 6139 |
| 4 | 55088 |
| 5 | 418876 |
| 6 | 2967939 |
| 7 | 20054092 |
| 8 | 132811808 |
| 9 | 872534329 |
| 10 | 5738891880 |
| 11 | 37936245944 |
| 12 | 252477346073 |
| 13 | 1691541385664 |
| 14 | 11399493261624 |
| 15 | 77185331515715 |
| 16 | 524508182445648 |
| 17 | 3573732263034644 |
| 18 | 24395832049714499 |