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 | 36 |
| 3 | 1225 |
| 4 | 41616 |
| 5 | 1413721 |
| 6 | 48024900 |
| 7 | 1631432881 |
| 8 | 55420693056 |
| 9 | 1882672131025 |
| 10 | 63955431761796 |
| 11 | 2172602007770041 |
| 12 | 73804512832419600 |
| 13 | 2507180834294496361 |
| 14 | 85170343853180456676 |
| 15 | 2893284510173841030625 |
| 16 | 98286503002057414584576 |
| 17 | 3338847817559778254844961 |
| 18 | 113422539294030403250144100 |