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 | 3 |
| 3 | 34 |
| 4 | 987 |
| 5 | 75025 |
| 6 | 14930352 |
| 7 | 7778742049 |
| 8 | 10610209857723 |
| 9 | 37889062373143906 |
| 10 | 354224848179261915075 |
| 11 | 8670007398507948658051921 |
| 12 | 555565404224292694404015791808 |
| 13 | 93202207781383214849429075266681969 |
| 14 | 40934782466626840596168752972961528246147 |