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 | 1 |
| 2 | 8 |
| 3 | 48 |
| 4 | 288 |
| 5 | 1736 |
| 6 | 10366 |
| 7 | 63911 |
| 8 | 435756 |
| 9 | 3703209 |
| 10 | 40131451 |
| 11 | 482893994 |
| 12 | 5700587521 |
| 13 | 63022146850 |
| 14 | 649554554509 |
| 15 | 6315823743218 |
| 16 | 59044525222412 |