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 | 63 |
| 2 | 665 |
| 3 | 3367 |
| 4 | 11529 |
| 5 | 31031 |
| 6 | 70993 |
| 7 | 144495 |
| 8 | 269297 |
| 9 | 468559 |
| 10 | 771561 |
| 11 | 1214423 |
| 12 | 1840825 |
| 13 | 2702727 |
| 14 | 3861089 |
| 15 | 5386591 |
| 16 | 7360353 |
| 17 | 9874655 |
| 18 | 13033657 |
| 19 | 16954119 |
| 20 | 21766121 |
| 21 | 27613783 |
| 22 | 34655985 |
| 23 | 43067087 |
| 24 | 53037649 |
| 25 | 64775151 |
| 26 | 78504713 |
| 27 | 94469815 |
| 28 | 112933017 |
| 29 | 134176679 |