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 | 14 |
| 3 | 147 |
| 4 | 1372 |
| 5 | 12005 |
| 6 | 100842 |
| 7 | 823543 |
| 8 | 6588344 |
| 9 | 51883209 |
| 10 | 403536070 |
| 11 | 3107227739 |
| 12 | 23727920916 |
| 13 | 179936733613 |
| 14 | 1356446145698 |
| 15 | 10173346092735 |
| 16 | 75960984159088 |
| 17 | 564959819683217 |
| 18 | 4187349251769726 |
| 19 | 30939858360298531 |
| 20 | 227977903707462860 |
| 21 | 1675637592249852021 |
| 22 | 12288009009832248154 |