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 | 12 |
| 2 | 144 |
| 3 | 636 |
| 4 | 2809 |
| 5 | 8692 |
| 6 | 26896 |
| 7 | 68060 |
| 8 | 172225 |
| 9 | 380970 |
| 10 | 842724 |
| 11 | 1690038 |
| 12 | 3389281 |
| 13 | 6303584 |
| 14 | 11723776 |
| 15 | 20533728 |
| 16 | 35964009 |
| 17 | 59970000 |
| 18 | 100000000 |
| 19 | 160050000 |
| 20 | 256160025 |
| 21 | 395963700 |
| 22 | 612067600 |
| 23 | 918225100 |
| 24 | 1377523225 |
| 25 | 2013488750 |