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 | 1 |
| 2 | 10 |
| 3 | 325 |
| 4 | 16750 |
| 5 | 1056250 |
| 6 | 74237500 |
| 7 | 5580578125 |
| 8 | 439118593750 |
| 9 | 35714849218750 |
| 10 | 2978473867187500 |
| 11 | 253316015488281250 |
| 12 | 21887247402929687500 |
| 13 | 1915840314586914062500 |
| 14 | 169529844641289062500000 |