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 | 281 |
| 3 | 21328 |
| 4 | 2858481 |
| 5 | 596558808 |
| 6 | 179058197641 |
| 7 | 73110755339168 |
| 8 | 38977936014004961 |
| 9 | 26295624802015360168 |
| 10 | 21898514473870334203641 |
| 11 | 22064773395630274673891568 |
| 12 | 26456951179676525013504937681 |
| 13 | 37229662306608638451691410580088 |