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 | 3 |
| 2 | 6 |
| 3 | 44 |
| 4 | 201 |
| 5 | 2436 |
| 6 | 16768 |
| 7 | 284388 |
| 8 | 2610633 |
| 9 | 56926096 |
| 10 | 653221506 |
| 11 | 17409078576 |
| 12 | 239721136817 |
| 13 | 7550440414752 |
| 14 | 121296879540684 |
| 15 | 4408222329882272 |
| 16 | 80934331054201905 |
| 17 | 3333529520918540544 |
| 18 | 68853515512316939422 |