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 | 1 |
| 1 | 6 |
| 2 | 94 |
| 3 | 1700 |
| 4 | 35466 |
| 5 | 795312 |
| 6 | 18848992 |
| 7 | 464517468 |
| 8 | 11801240050 |
| 9 | 307073982116 |
| 10 | 8147186436324 |
| 11 | 219664321959524 |
| 12 | 6003343077661216 |
| 13 | 165975724832822400 |
| 14 | 4634768975107569024 |
| 15 | 130553813782898706908 |
| 16 | 3705740233107582161538 |
| 17 | 105902829964290241990332 |