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 | 2 |
| 4 | 3 |
| 5 | 5 |
| 6 | 8 |
| 7 | 21 |
| 8 | 233 |
| 9 | 317811 |
| 10 | 3524578 |
| 11 | 7778742049 |
| 12 | 259695496911122585 |
| 13 | 19740274219868223167 |
| 14 | 10284720757613717413913 |
| 15 | 263621064469290555679241849789653324393054271110084140201023 |