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 | 0 |
| 2 | 0 |
| 3 | 8 |
| 4 | 128 |
| 5 | 1890 |
| 6 | 27036 |
| 7 | 379491 |
| 8 | 5229092 |
| 9 | 70805740 |
| 10 | 944106760 |
| 11 | 12426068215 |
| 12 | 161793730426 |
| 13 | 2087922762430 |
| 14 | 26745380615078 |