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) |
|---|---|
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 8 |
| 9 | 9 |
| 10 | 53 |
| 11 | 251 |
| 12 | 1053 |
| 13 | 4078 |
| 14 | 14945 |
| 15 | 52586 |
| 16 | 179411 |
| 17 | 597480 |
| 18 | 1951618 |
| 19 | 6274858 |
| 20 | 19912475 |
| 21 | 62497879 |
| 22 | 194330213 |
| 23 | 599408935 |
| 24 | 1836028197 |
| 25 | 5589730484 |