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) |
|---|---|
| 1 | 64 |
| 2 | 4021 |
| 3 | 287802 |
| 4 | 20148584 |
| 5 | 1415755252 |
| 6 | 99419347147 |
| 7 | 6982256142285 |
| 8 | 490358739919898 |
| 9 | 34437619490245450 |
| 10 | 2418533807739519677 |
| 11 | 169852219543126318591 |
| 12 | 11928622276532341733243 |
| 13 | 837740183488415335215180 |