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 | 216 |
| 2 | 3375 |
| 3 | 42875 |
| 4 | 456533 |
| 5 | 2924207 |
| 6 | 10793861 |
| 7 | 33698267 |
| 8 | 83453453 |
| 9 | 296740963 |
| 10 | 726572699 |
| 11 | 1509003523 |
| 12 | 3491055413 |
| 13 | 5479701947 |
| 14 | 8254655261 |
| 15 | 15456856771 |
| 16 | 30576209383 |
| 17 | 46617130799 |
| 18 | 68267486503 |
| 19 | 107646386093 |
| 20 | 139233463487 |
| 21 | 191800552663 |
| 22 | 281913290693 |
| 23 | 403092109603 |