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 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 13 |
| 5 | 17 |
| 6 | 55 |
| 7 | 65 |
| 8 | 201 |
| 9 | 293 |
| 10 | 779 |
| 11 | 1025 |
| 12 | 3365 |
| 13 | 4097 |
| 14 | 12303 |
| 15 | 17781 |
| 16 | 49681 |
| 17 | 65537 |
| 18 | 204547 |
| 19 | 262145 |
| 20 | 791549 |
| 21 | 1095429 |
| 22 | 3145751 |
| 23 | 4194305 |
| 24 | 12897625 |
| 25 | 16787217 |
| 26 | 50331675 |
| 27 | 68788805 |
| 28 | 201591509 |
| 29 | 268435457 |
| 30 | 815505231 |
| 31 | 1073741825 |
| 32 | 3223326753 |
| 33 | 4355433957 |
| 34 | 12884901923 |