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 | 0 |
| 2 | 1 |
| 3 | 20 |
| 4 | 255 |
| 5 | 3064 |
| 6 | 34743 |
| 7 | 380939 |
| 8 | 4089499 |
| 9 | 43282317 |
| 10 | 453472867 |
| 11 | 4715695283 |
| 12 | 48760330737 |
| 13 | 501941505404 |
| 14 | 5148657883067 |
| 15 | 52659616820819 |