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 | 1 |
| 2 | 5 |
| 3 | 35 |
| 4 | 759 |
| 5 | 32970 |
| 6 | 2877651 |
| 7 | 311400852 |
| 8 | 34630385050 |
| 9 | 3667889498353 |
| 10 | 360865277628727 |
| 11 | 32754692969489938 |
| 12 | 2743732568913925577 |
| 13 | 212759983293659858532 |
| 14 | 15334208540810309509868 |