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 | 10 |
| 2 | 241 |
| 3 | 10537 |
| 4 | 573928 |
| 5 | 35547994 |
| 6 | 2409600865 |
| 7 | 174155363186 |
| 8 | 13163230391312 |
| 9 | 1029540512731472 |
| 10 | 82720372430619225 |
| 11 | 6791513306490769978 |
| 12 | 567576781128880904593 |
| 13 | 48140629936389507358024 |