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) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 8 |
| 4 | 16 |
| 5 | 1024 |
| 6 | 64 |
| 7 | 279936 |
| 8 | 65536 |
| 9 | 10077696 |
| 10 | 1048576 |
| 11 | 100000000000 |
| 12 | 16777216 |
| 13 | 106993205379072 |
| 14 | 78364164096 |
| 15 | 35184372088832 |
| 16 | 281474976710656 |
| 17 | 295147905179352825856 |
| 18 | 101559956668416 |
| 19 | 708235345355337676357632 |
| 20 | 1152921504606846976 |
| 21 | 46005119909369701466112 |
| 22 | 10000000000000000000000 |