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 | 0 |
| 2 | 64 |
| 3 | 665 |
| 4 | 3431 |
| 5 | 12194 |
| 6 | 34462 |
| 7 | 83187 |
| 8 | 178957 |
| 9 | 352484 |
| 10 | 647516 |
| 11 | 1124045 |
| 12 | 1861939 |
| 13 | 2964870 |
| 14 | 4564666 |
| 15 | 6825959 |
| 16 | 9951257 |
| 17 | 14186312 |
| 18 | 19825912 |
| 19 | 27219969 |
| 20 | 36780031 |
| 21 | 48986090 |
| 22 | 64393814 |
| 23 | 83642075 |
| 24 | 107460901 |