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 | 16 |
| 2 | 256 |
| 3 | 1296 |
| 4 | 4900 |
| 5 | 23716 |
| 6 | 104976 |
| 7 | 509796 |
| 8 | 2421136 |
| 9 | 11943936 |
| 10 | 58828900 |
| 11 | 294946276 |
| 12 | 1484406784 |
| 13 | 7542922500 |
| 14 | 38500718656 |
| 15 | 197686944400 |
| 16 | 1018981226916 |
| 17 | 5273535630724 |
| 18 | 27375958697616 |
| 19 | 142523723188900 |
| 20 | 743755656909456 |