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 | 81 |
| 2 | 2570 |
| 3 | 99245 |
| 4 | 3697742 |
| 5 | 139221499 |
| 6 | 5221177246 |
| 7 | 196091375073 |
| 8 | 7361533108317 |
| 9 | 276386201580189 |
| 10 | 10376697508977992 |
| 11 | 389585088134351369 |
| 12 | 14626667590533685932 |
| 13 | 549146940474831592906 |
| 14 | 20617295057949494189434 |