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 | 29 |
| 2 | 31 |
| 3 | 43 |
| 4 | 59 |
| 5 | 283 |
| 6 | 1051 |
| 7 | 8219 |
| 8 | 16411 |
| 9 | 65563 |
| 10 | 1099511627803 |
| 11 | 2199023255579 |
| 12 | 17592186044443 |
| 13 | 77371252455336267181195291 |
| 14 | 1298074214633706907132624082305051 |