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 | 91 |
| 3 | 8191 |
| 4 | 737191 |
| 5 | 66347191 |
| 6 | 5971247191 |
| 7 | 537412247191 |
| 8 | 48367102247191 |
| 9 | 4353039202247191 |
| 10 | 391773528202247191 |
| 11 | 35259617538202247191 |
| 12 | 3173365578438202247191 |
| 13 | 285602902059438202247191 |
| 14 | 25704261185349438202247191 |
| 15 | 2313383506681449438202247191 |