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 | 0 |
| 2 | 1 |
| 3 | 1000 |
| 4 | 1000000 |
| 5 | 1000000000 |
| 6 | 1000000000000 |
| 7 | 1000000000000000 |
| 8 | 1246600760666624 |
| 9 | 1315559990715517 |
| 10 | 2325413183184125 |
| 11 | 2663883812634624 |
| 12 | 4050549951695416 |
| 13 | 4544600014144000 |