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 | 1977326743 |
| 2 | 1792160394037 |
| 3 | 116490258898219 |
| 4 | 2384185791015625 |
| 5 | 25408476896404831 |
| 6 | 177917621779460413 |
| 7 | 929293739471222707 |
| 8 | 3909821048582988049 |
| 9 | 13931233916552734375 |
| 10 | 43513917611435838661 |
| 11 | 122130132904968017083 |
| 12 | 313726685568359708377 |
| 13 | 747993810527520928879 |