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 | 49 |
| 3 | 2304 |
| 4 | 108241 |
| 5 | 5085025 |
| 6 | 238887936 |
| 7 | 11222647969 |
| 8 | 527225566609 |
| 9 | 24768378982656 |
| 10 | 1163586586618225 |
| 11 | 54663801192073921 |
| 12 | 2568035069440856064 |
| 13 | 120642984462528161089 |
| 14 | 5667652234669382715121 |
| 15 | 266259012044998459449600 |
| 16 | 12508505913880258211416081 |