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 | 8 |
| 3 | 104 |
| 4 | 560 |
| 5 | 5368 |
| 6 | 12376 |
| 7 | 47328 |
| 8 | 82536 |
| 9 | 214544 |
| 10 | 683704 |
| 11 | 954304 |
| 12 | 2311464 |
| 13 | 3861872 |
| 14 | 4900280 |
| 15 | 7644832 |
| 16 | 13939848 |
| 17 | 23830808 |
| 18 | 28153208 |
| 19 | 45004168 |
| 20 | 60140976 |
| 21 | 69102384 |
| 22 | 102568544 |
| 23 | 131301352 |
| 24 | 186135312 |
| 25 | 286244672 |
| 26 | 350336680 |
| 27 | 386424688 |
| 28 | 467517240 |
| 29 | 512874648 |