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 | 5 |
| 2 | 109 |
| 3 | 1189 |
| 4 | 6485 |
| 5 | 141481 |
| 6 | 1543321 |
| 7 | 8417525 |
| 8 | 183642229 |
| 9 | 2003229469 |
| 10 | 10925940965 |
| 11 | 238367471761 |
| 12 | 2600190307441 |
| 13 | 14181862955045 |
| 14 | 309400794703549 |
| 15 | 3375045015828949 |
| 16 | 18408047189707445 |
| 17 | 401601993157734841 |
| 18 | 4380805830355668361 |