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 | 2 |
| 3 | 82 |
| 4 | 3362 |
| 5 | 137842 |
| 6 | 188354 |
| 7 | 5651522 |
| 8 | 7722514 |
| 9 | 13232914 |
| 10 | 231712402 |
| 11 | 316623074 |
| 12 | 432649138 |
| 13 | 542549474 |
| 14 | 1196468642 |
| 15 | 2650762258 |
| 16 | 9500208482 |
| 17 | 12981546034 |
| 18 | 17738614658 |
| 19 | 22244528434 |
| 20 | 30396003458 |
| 21 | 49055214322 |
| 22 | 108681252578 |
| 23 | 389508547762 |
| 24 | 532243387394 |
| 25 | 727283200978 |
| 26 | 912025665794 |
| 27 | 993795069986 |