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 | 6 |
| 3 | 17 |
| 4 | 128 |
| 5 | 883 |
| 6 | 7358 |
| 7 | 62853 |
| 8 | 563109 |
| 9 | 5153746 |
| 10 | 48127107 |
| 11 | 456011561 |
| 12 | 4374662802 |
| 13 | 42398844001 |