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 | 1 |
| 3 | 32821 |
| 4 | 542557 |
| 5 | 4978219 |
| 6 | 38280865 |
| 7 | 277198249 |
| 8 | 1964161189 |
| 9 | 13808869207 |
| 10 | 96809981737 |
| 11 | 678032111797 |
| 12 | 4747103957005 |
| 13 | 33231843226435 |
| 14 | 232627950507697 |
| 15 | 1628407600271233 |
| 16 | 11398881253796341 |
| 17 | 79792234154371567 |
| 18 | 558545790385795897 |