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 | 178 |
| 3 | 1701 |
| 4 | 6962 |
| 5 | 93150 |
| 6 | 1172288 |
| 7 | 9403199 |
| 8 | 85828150 |
| 9 | 919035936 |
| 10 | 8853487049 |
| 11 | 82411356392 |
| 12 | 809231737581 |
| 13 | 7936987592888 |
| 14 | 76162052363914 |
| 15 | 735775369925651 |
| 16 | 7159378085264000 |
| 17 | 69324523431873026 |
| 18 | 670205953180878528 |