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 | 4 |
| 2 | 45 |
| 3 | 304 |
| 4 | 464 |
| 5 | 1870 |
| 6 | 6048 |
| 7 | 14421 |
| 8 | 119072 |
| 9 | 130304 |
| 10 | 561824 |
| 11 | 1736150 |
| 12 | 8124416 |
| 13 | 9519296 |
| 14 | 16303104 |
| 15 | 26409026 |