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 | 12 |
| 3 | 1182 |
| 4 | 45502 |
| 5 | 2127332 |
| 6 | 95718442 |
| 7 | 4343656672 |
| 8 | 196769260362 |
| 9 | 8917775068522 |
| 10 | 404126474166012 |
| 11 | 18314237688963002 |
| 12 | 829962636335203152 |
| 13 | 37612209746663052792 |
| 14 | 1704508129504662739932 |
| 15 | 77244815889633863270612 |
| 16 | 3500576762912651494559832 |
| 17 | 158638966340047716575123082 |