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) |
|---|---|
| 2 | 3264 |
| 3 | 73368 |
| 4 | 2172480 |
| 5 | 29861820 |
| 6 | 560028096 |
| 7 | 6632769528 |
| 8 | 103075391424 |
| 9 | 1156940480232 |
| 10 | 16166871906480 |
| 11 | 176333810290572 |
| 12 | 2300510733948576 |
| 13 | 24611138715163572 |
| 14 | 306092489935215648 |
| 15 | 3227108582232289260 |
| 16 | 38755349620705085952 |
| 17 | 403867959699992233836 |
| 18 | 4722889110592680685152 |
| 19 | 48750193590184268147100 |