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 | 34 |
| 3 | 1155 |
| 4 | 39236 |
| 5 | 1332869 |
| 6 | 45278310 |
| 7 | 1538129671 |
| 8 | 52251130504 |
| 9 | 1775000307465 |
| 10 | 60297759323306 |
| 11 | 2048348816684939 |
| 12 | 69583562007964620 |
| 13 | 2363792759454112141 |
| 14 | 80299370259431848174 |
| 15 | 2727814796061228725775 |
| 16 | 92665403695822344828176 |
| 17 | 3147895910861898495432209 |