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 | 3 |
| 2 | 29 |
| 3 | 799 |
| 4 | 43353 |
| 5 | 3837851 |
| 6 | 501393973 |
| 7 | 90608944119 |
| 8 | 21633834338609 |
| 9 | 6593857931708083 |
| 10 | 2497877833687172301 |
| 11 | 1151118261673522046543 |
| 12 | 634098400947597342716809 |
| 13 | 411445662820653995008883019 |