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 | 16 |
| 2 | 128 |
| 3 | 688 |
| 4 | 2816 |
| 5 | 9424 |
| 6 | 27008 |
| 7 | 68464 |
| 8 | 157184 |
| 9 | 332688 |
| 10 | 658048 |
| 11 | 1229360 |
| 12 | 2187520 |
| 13 | 3732560 |
| 14 | 6140800 |
| 15 | 9785072 |
| 16 | 15158272 |
| 17 | 22900496 |
| 18 | 33830016 |
| 19 | 48978352 |
| 20 | 69629696 |
| 21 | 97364944 |
| 22 | 134110592 |
| 23 | 182192752 |
| 24 | 244396544 |
| 25 | 324031120 |
| 26 | 425000576 |