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 | 0 |
| 1 | 1 |
| 2 | 7 |
| 3 | 43 |
| 4 | 253 |
| 5 | 1462 |
| 6 | 8378 |
| 7 | 47818 |
| 8 | 272422 |
| 9 | 1550927 |
| 10 | 8829033 |
| 11 | 50276013 |
| 12 | 286430763 |
| 13 | 1632808572 |
| 14 | 9313861092 |
| 15 | 53163187748 |
| 16 | 303653552188 |