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 | 1 |
| 2 | 91 |
| 3 | 728 |
| 4 | 2741256 |
| 5 | 6017193 |
| 6 | 1412774811 |
| 7 | 11302198488 |
| 8 | 137513849003496 |
| 9 | 424910390480793000 |
| 10 | 933528127886302221000 |