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 | 3 |
| 5 | 4 |
| 6 | 5 |
| 7 | 6 |
| 8 | 7 |
| 9 | 8 |
| 10 | 9 |
| 11 | 11 |
| 12 | 22 |
| 13 | 525 |
| 14 | 575 |
| 15 | 2332 |
| 16 | 4664 |
| 17 | 6226 |
| 18 | 6996 |
| 19 | 8558 |
| 20 | 10001 |
| 21 | 11011 |
| 22 | 12621 |
| 23 | 13631 |
| 24 | 374473 |
| 25 | 1851581 |
| 26 | 2207022 |
| 27 | 2267622 |
| 28 | 2762672 |
| 29 | 3118113 |
| 30 | 3673763 |
| 31 | 4029204 |
| 32 | 4296924 |
| 33 | 4925294 |
| 34 | 5103015 |
| 35 | 5836385 |
| 36 | 6014106 |
| 37 | 6281826 |
| 38 | 6747476 |
| 39 | 7132317 |
| 40 | 7192917 |
| 41 | 7658567 |
| 42 | 7865687 |