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 | 264 |
| 2 | 8568 |
| 3 | 231456 |
| 4 | 6214872 |
| 5 | 166719024 |
| 6 | 4472485344 |
| 7 | 119980322880 |
| 8 | 3218631807384 |
| 9 | 86344077536616 |
| 10 | 2316294684846288 |
| 11 | 62137684699355232 |
| 12 | 1666926011246777184 |
| 13 | 44717506621139113584 |
| 14 | 1199606572169515887552 |
| 15 | 32181041313068138778816 |