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) |
|---|---|
| 2 | 1 |
| 3 | 65 |
| 4 | 865 |
| 5 | 153713 |
| 6 | 200403 |
| 7 | 84873489 |
| 8 | 807843807 |
| 9 | 25265669869 |
| 10 | 28682861185 |
| 11 | 42667254975995 |
| 12 | 47094524452625 |
| 13 | 113048851861209965 |
| 14 | 122484165188229545 |
| 15 | 131772609157313825 |
| 16 | 1127325729624166675 |
| 17 | 5892299098094866152275 |