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 | 34 |
| 1 | 2370 |
| 2 | 111705 |
| 3 | 4579575 |
| 4 | 178378200 |
| 5 | 6873506640 |
| 6 | 267565948650 |
| 7 | 10644585301350 |
| 8 | 435650179214250 |
| 9 | 18411603581621250 |
| 10 | 805168495577320875 |
| 11 | 36472461710322763125 |
| 12 | 1711907729642450340000 |
| 13 | 83253368434295609550000 |