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 | 26 |
| 2 | 214 |
| 3 | 1406 |
| 4 | 10814 |
| 5 | 84426 |
| 6 | 675262 |
| 7 | 5474306 |
| 8 | 44862014 |
| 9 | 370667774 |
| 10 | 3082741374 |
| 11 | 25775117966 |
| 12 | 216460107326 |
| 13 | 1824572346350 |
| 14 | 15427938607960 |
| 15 | 130804716210096 |
| 16 | 1111599418378734 |
| 17 | 9465652381274166 |
| 18 | 80745664149260704 |