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 | 0 |
| 1 | 279936 |
| 2 | 35831808 |
| 3 | 612220032 |
| 4 | 4586471424 |
| 5 | 21870000000 |
| 6 | 78364164096 |
| 7 | 230539333248 |
| 8 | 587068342272 |
| 9 | 1338925209984 |
| 10 | 2799360000000 |
| 11 | 5455160701056 |
| 12 | 10030613004288 |
| 13 | 17565568854912 |
| 14 | 29509034655744 |