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 | 3 |
| 2 | 17 |
| 3 | 265 |
| 4 | 4329 |
| 5 | 16779497 |
| 6 | 4311714025 |
| 7 | 73031059689 |
| 8 | 1152921577101035753 |
| 9 | 1329227995784915873480267885077956841 |
| 10 | 95780971304118054976624684827067692545766545852041449 |