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) |
|---|---|
| 2 | 48 |
| 3 | 440 |
| 4 | 2008 |
| 5 | 6468 |
| 6 | 16736 |
| 7 | 37248 |
| 8 | 74280 |
| 9 | 136268 |
| 10 | 234128 |
| 11 | 381576 |
| 12 | 595448 |
| 13 | 896020 |
| 14 | 1307328 |
| 15 | 1857488 |
| 16 | 2579016 |
| 17 | 3509148 |
| 18 | 4690160 |
| 19 | 6169688 |
| 20 | 8001048 |
| 21 | 10243556 |
| 22 | 12962848 |
| 23 | 16231200 |
| 24 | 20127848 |
| 25 | 24739308 |
| 26 | 30159696 |
| 27 | 36491048 |
| 28 | 43843640 |
| 29 | 52336308 |
| 30 | 62096768 |