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 | 5120 |
| 2 | 21508 |
| 3 | 109796 |
| 4 | 626780 |
| 5 | 3877300 |
| 6 | 25603228 |
| 7 | 178909300 |
| 8 | 1314748124 |
| 9 | 10105541204 |
| 10 | 80812754568 |
| 11 | 668845118276 |
| 12 | 5700499630916 |
| 13 | 49800720887968 |
| 14 | 444140848321356 |
| 15 | 4029482453905756 |
| 16 | 37080781799409148 |
| 17 | 345278411878468044 |
| 18 | 3246772078088155432 |
| 19 | 30781946900321278256 |