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 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 11 |
| 5 | 17 |
| 6 | 41 |
| 7 | 101 |
| 8 | 251 |
| 9 | 257 |
| 10 | 401 |
| 11 | 641 |
| 12 | 1601 |
| 13 | 4001 |
| 14 | 16001 |
| 15 | 25601 |
| 16 | 40961 |
| 17 | 62501 |
| 18 | 65537 |
| 19 | 160001 |
| 20 | 163841 |
| 21 | 16384001 |
| 22 | 26214401 |
| 23 | 40960001 |
| 24 | 62500001 |
| 25 | 104857601 |
| 26 | 167772161 |
| 27 | 256000001 |
| 28 | 409600001 |
| 29 | 655360001 |
| 30 | 2441406251 |
| 31 | 2500000001 |
| 32 | 4194304001 |
| 33 | 10485760001 |