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 | 7 |
| 4 | 31 |
| 5 | 127 |
| 6 | 271 |
| 7 | 607 |
| 8 | 2047 |
| 9 | 3151 |
| 10 | 8191 |
| 11 | 10111 |
| 12 | 40447 |
| 13 | 42367 |
| 14 | 48511 |
| 15 | 50431 |
| 16 | 80767 |
| 17 | 88831 |
| 18 | 90751 |
| 19 | 121087 |
| 20 | 131071 |
| 21 | 161407 |
| 22 | 163327 |
| 23 | 169471 |
| 24 | 171391 |
| 25 | 201727 |
| 26 | 209791 |
| 27 | 211711 |
| 28 | 243967 |
| 29 | 250111 |
| 30 | 282367 |
| 31 | 290431 |
| 32 | 292351 |
| 33 | 322687 |
| 34 | 324607 |
| 35 | 332671 |