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 | 14 |
| 2 | 119 |
| 3 | 770 |
| 4 | 4165 |
| 5 | 19754 |
| 6 | 84602 |
| 7 | 333608 |
| 8 | 1228080 |
| 9 | 4263770 |
| 10 | 14071827 |
| 11 | 44420796 |
| 12 | 134793918 |
| 13 | 394805110 |
| 14 | 1119974875 |
| 15 | 3086034350 |
| 16 | 8280022023 |
| 17 | 21678277754 |
| 18 | 55486209625 |
| 19 | 139065013640 |
| 20 | 341779759755 |
| 21 | 824753397814 |
| 22 | 1956347387428 |