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) |
|---|---|
| 0 | 5 |
| 1 | 1 |
| 2 | 6 |
| 3 | 81 |
| 4 | 276 |
| 5 | 1056 |
| 6 | 1381 |
| 7 | 50781 |
| 8 | 6906 |
| 9 | 17956 |
| 10 | 34531 |
| 11 | 660156 |
| 12 | 40056 |
| 13 | 4462656 |
| 14 | 305256 |
| 15 | 448906 |
| 16 | 200281 |
| 17 | 412597656 |
| 18 | 520731 |
| 19 | 12397766113281 |
| 20 | 1001406 |
| 21 | 11222656 |
| 22 | 539550781 |
| 23 | 7631406 |
| 24 | 1482081 |
| 25 | 75865156 |
| 26 | 422394133 |
| 27 | 8852431 |
| 28 | 25035156 |
| 29 | 161170959472656 |