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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 5 |
| 5 | 9 |
| 6 | 19 |
| 7 | 35 |
| 8 | 71 |
| 9 | 135 |
| 10 | 271 |
| 11 | 527 |
| 12 | 1055 |
| 13 | 2079 |
| 14 | 4159 |
| 15 | 8255 |
| 16 | 16511 |
| 17 | 32895 |
| 18 | 65791 |
| 19 | 131327 |
| 20 | 262655 |
| 21 | 524799 |
| 22 | 1049599 |
| 23 | 2098175 |
| 24 | 4196351 |
| 25 | 8390655 |
| 26 | 16781311 |
| 27 | 33558527 |
| 28 | 67117055 |
| 29 | 134225919 |
| 30 | 268451839 |
| 31 | 536887295 |
| 32 | 1073774591 |
| 33 | 2147516415 |
| 34 | 4295032831 |
| 35 | 8590000127 |