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 | 1 |
| 2 | 4112 |
| 3 | 797283 |
| 4 | 33554944 |
| 5 | 610353125 |
| 6 | 6530350896 |
| 7 | 48444513607 |
| 8 | 274877923328 |
| 9 | 1270932943689 |
| 10 | 5000000050000 |
| 11 | 17261356152491 |
| 12 | 53496602813952 |
| 13 | 151437553481773 |
| 14 | 396857386895984 |
| 15 | 973097534559375 |
| 16 | 2251799814209536 |