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) |
|---|---|
| 1 | 6350400 |
| 2 | 43560000 |
| 3 | 635040000 |
| 4 | 768398400 |
| 5 | 4356000000 |
| 6 | 42033200400 |
| 7 | 55847142400 |
| 8 | 63504000000 |
| 9 | 64780430400 |
| 10 | 72694944400 |
| 11 | 76839840000 |
| 12 | 78243278400 |
| 13 | 234101145600 |
| 14 | 435600000000 |
| 15 | 4203320040000 |
| 16 | 5086017248400 |
| 17 | 5584714240000 |
| 18 | 6350400000000 |
| 19 | 6363107150400 |
| 20 | 6478043040000 |
| 21 | 6757504230400 |