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) |
|---|---|
| 0 | 1 |
| 1 | 12 |
| 2 | 570 |
| 3 | 44689 |
| 4 | 4223479 |
| 5 | 441010458 |
| 6 | 49014411306 |
| 7 | 5685822210429 |
| 8 | 680500195656621 |
| 9 | 83406972284096638 |
| 10 | 10416465145620729162 |
| 11 | 1320749077779826216029 |
| 12 | 169570747575202480367168 |
| 13 | 22000830732097549119672094 |
| 14 | 2880094468241888675318895339 |
| 15 | 379941591968957300338548388051 |
| 16 | 50458777676743899501139029335858 |