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 | 7 |
| 3 | 56 |
| 4 | 63 |
| 5 | 448 |
| 6 | 455 |
| 7 | 504 |
| 8 | 511 |
| 9 | 3584 |
| 10 | 3591 |
| 11 | 3640 |
| 12 | 3647 |
| 13 | 4032 |
| 14 | 4039 |
| 15 | 4088 |
| 16 | 4095 |
| 17 | 28672 |
| 18 | 28679 |
| 19 | 28728 |
| 20 | 28735 |
| 21 | 29120 |
| 22 | 29127 |
| 23 | 29176 |
| 24 | 29183 |
| 25 | 32256 |
| 26 | 32263 |
| 27 | 32312 |
| 28 | 32319 |
| 29 | 32704 |
| 30 | 32711 |
| 31 | 32760 |
| 32 | 32767 |
| 33 | 229376 |
| 34 | 229383 |
| 35 | 229432 |
| 36 | 229439 |
| 37 | 229824 |