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 | 16 |
| 2 | 144 |
| 3 | 256 |
| 4 | 3600 |
| 5 | 1296 |
| 6 | 2304 |
| 7 | 65536 |
| 8 | 129600 |
| 9 | 16777216 |
| 10 | 32400 |
| 11 | 20736 |
| 12 | 57600 |
| 13 | 331776 |
| 14 | 589824 |
| 15 | 4294967296 |
| 16 | 6350400 |
| 17 | 1099511627776 |
| 18 | 150994944 |
| 19 | 810000 |
| 20 | 1587600 |
| 21 | 1679616 |
| 22 | 518400 |
| 23 | 5308416 |
| 24 | 2822400 |
| 25 | 84934656 |
| 26 | 8294400 |
| 27 | 26873856 |
| 28 | 14745600 |
| 29 | 21743271936 |
| 30 | 38654705664 |