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 | 25908120 |
| 2 | 136616760 |
| 3 | 171430560 |
| 4 | 196876680 |
| 5 | 354049920 |
| 6 | 405601560 |
| 7 | 514374840 |
| 8 | 825473880 |
| 9 | 1204476000 |
| 10 | 2223650520 |
| 11 | 2510539920 |
| 12 | 3003191100 |
| 13 | 4017339480 |
| 14 | 4574146500 |
| 15 | 6129062940 |
| 16 | 6797728800 |
| 17 | 7311296520 |
| 18 | 9779952000 |
| 19 | 12472435080 |
| 20 | 13103164800 |
| 21 | 19989450000 |
| 22 | 22180840920 |
| 23 | 22710872520 |