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 | 13 |
| 6 | 21 |
| 7 | 34 |
| 8 | 144 |
| 9 | 233 |
| 10 | 610 |
| 11 | 4181 |
| 12 | 832040 |
| 13 | 102334155 |
| 14 | 1134903170 |
| 15 | 20365011074 |
| 16 | 12200160415121876738 |