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 | 63 |
| 2 | 665 |
| 3 | 3969 |
| 4 | 14833 |
| 5 | 45801 |
| 6 | 112825 |
| 7 | 257257 |
| 8 | 515025 |
| 9 | 980217 |
| 10 | 1720145 |
| 11 | 2934505 |
| 12 | 4693473 |
| 13 | 7396137 |
| 14 | 11112129 |
| 15 | 16464385 |
| 16 | 23555441 |
| 17 | 33430033 |
| 18 | 45927505 |
| 19 | 62881561 |
| 20 | 83865257 |
| 21 | 111331241 |
| 22 | 144772201 |
| 23 | 187839225 |
| 24 | 238778281 |
| 25 | 303522401 |
| 26 | 379323785 |