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 | 1 |
| 1 | 24 |
| 2 | 397 |
| 3 | 5652 |
| 4 | 74665 |
| 5 | 946992 |
| 6 | 11736613 |
| 7 | 143526444 |
| 8 | 1741517569 |
| 9 | 21034565640 |
| 10 | 253379036989 |
| 11 | 3047347017156 |
| 12 | 36615998359513 |
| 13 | 439728040092768 |
| 14 | 5279095003079125 |
| 15 | 63365680208288988 |
| 16 | 760504096286734897 |