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 | 4 |
| 4 | 47 |
| 5 | 99 |
| 6 | 294 |
| 7 | 527 |
| 8 | 616 |
| 9 | 1152 |
| 10 | 1456 |
| 11 | 2638 |
| 12 | 2705 |
| 13 | 4105 |
| 14 | 31772 |
| 15 | 88683 |
| 16 | 90658 |
| 17 | 95845 |
| 18 | 237245 |
| 19 | 1387437 |
| 20 | 5499408 |
| 21 | 12672729 |
| 22 | 110482114 |