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 | 0 |
| 1 | 1 |
| 2 | 176 |
| 3 | 1281 |
| 4 | 4720 |
| 5 | 12545 |
| 6 | 27456 |
| 7 | 52801 |
| 8 | 92576 |
| 9 | 151425 |
| 10 | 234640 |
| 11 | 348161 |
| 12 | 498576 |
| 13 | 693121 |
| 14 | 939680 |
| 15 | 1246785 |
| 16 | 1623616 |
| 17 | 2080001 |
| 18 | 2626416 |
| 19 | 3273985 |
| 20 | 4034480 |
| 21 | 4920321 |
| 22 | 5944576 |
| 23 | 7120961 |
| 24 | 8463840 |
| 25 | 9988225 |
| 26 | 11709776 |
| 27 | 13644801 |
| 28 | 15810256 |
| 29 | 18223745 |
| 30 | 20903520 |