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 | 1 |
| 1 | 325 |
| 2 | 44850 |
| 3 | 3453450 |
| 4 | 164038875 |
| 5 | 5019589575 |
| 6 | 100391791500 |
| 7 | 1305093289500 |
| 8 | 10767019638375 |
| 9 | 53835098191875 |
| 10 | 150738274937250 |
| 11 | 205552193096250 |
| 12 | 102776096548125 |
| 13 | 7905853580625 |
| 14 | 0 |
| 15 | 0 |
| 16 | 0 |