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 | 8 |
| 2 | 72 |
| 3 | 888 |
| 4 | 16392 |
| 5 | 479736 |
| 6 | 23196168 |
| 7 | 1909718520 |
| 8 | 273790460424 |
| 9 | 69532461669880 |
| 10 | 31699923943776776 |
| 11 | 26220200137673186808 |
| 12 | 39689067731528646091272 |
| 13 | 110732781183212424923225592 |