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 | 3 |
| 2 | 1 |
| 3 | 4 |
| 4 | 15 |
| 5 | 22 |
| 6 | 121 |
| 7 | 735 |
| 8 | 31 |
| 9 | 46 |
| 10 | 22143 |
| 11 | 4468 |
| 12 | 67 |
| 13 | 31455 |
| 14 | 391 |
| 15 | 2308 |
| 16 | 447 |
| 17 | 94 |
| 18 | 33151 |
| 19 | 16383 |
| 20 | 139 |
| 21 | 202 |
| 22 | 7551 |
| 23 | 5224 |
| 24 | 787 |
| 25 | 1595391 |
| 26 | 3685 |
| 27 | 580 |
| 28 | 30591 |
| 29 | 418 |
| 30 | 42495 |
| 31 | 1791 |
| 32 | 607 |
| 33 | 1342 |
| 34 | 3217407 |
| 35 | 1095166 |
| 36 | 283 |
| 37 | 398847 |
| 38 | 32767 |
| 39 | 365311 |
| 40 | 88575 |
| 41 | 1174 |
| 42 | 6925 |
| 43 | 12304383 |