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 | 8 |
| 3 | 127 |
| 4 | 10045 |
| 5 | 3226809 |
| 6 | 2123742189 |
| 7 | 1670170058120 |
| 8 | 1289964348650070 |
| 9 | 920838234258938763 |
| 10 | 599346797545763804780 |
| 11 | 356146243319205483449324 |
| 12 | 194251772536685406037980410 |
| 13 | 97833621781412430001564385695 |