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 | 34 |
| 2 | 1122 |
| 3 | 37026 |
| 4 | 1221858 |
| 5 | 40320753 |
| 6 | 1330566336 |
| 7 | 43908078720 |
| 8 | 1448946455616 |
| 9 | 47814568344576 |
| 10 | 1577858820890352 |
| 11 | 52068617261591040 |
| 12 | 1718240483647446528 |
| 13 | 56701147733816154624 |
| 14 | 1871111864101388705280 |
| 15 | 61745833160498214613248 |