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 | 3 |
| 1 | 22 |
| 2 | 92 |
| 3 | 288 |
| 4 | 750 |
| 5 | 1716 |
| 6 | 3564 |
| 7 | 6864 |
| 8 | 12441 |
| 9 | 21450 |
| 10 | 35464 |
| 11 | 56576 |
| 12 | 87516 |
| 13 | 131784 |
| 14 | 193800 |
| 15 | 279072 |
| 16 | 394383 |
| 17 | 547998 |
| 18 | 749892 |
| 19 | 1012000 |
| 20 | 1348490 |
| 21 | 1776060 |
| 22 | 2314260 |
| 23 | 2985840 |
| 24 | 3817125 |
| 25 | 4838418 |
| 26 | 6084432 |
| 27 | 7594752 |
| 28 | 9414328 |
| 29 | 11594000 |
| 30 | 14191056 |