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 | 100 |
| 3 | 1000 |
| 4 | 5400 |
| 5 | 10000 |
| 6 | 54000 |
| 7 | 100000 |
| 8 | 540000 |
| 9 | 1000000 |
| 10 | 1306449 |
| 11 | 1728243 |
| 12 | 5400000 |
| 13 | 10000000 |
| 14 | 50086125 |
| 15 | 54000000 |
| 16 | 100000000 |
| 17 | 130644900 |
| 18 | 172824300 |
| 19 | 540000000 |
| 20 | 1000000000 |
| 21 | 1044000721 |
| 22 | 1306449000 |
| 23 | 1728243000 |
| 24 | 5008612500 |