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 | 12 |
| 2 | 444 |
| 3 | 7584 |
| 4 | 103184 |
| 5 | 1246892 |
| 6 | 14010212 |
| 7 | 150042016 |
| 8 | 1554630384 |
| 9 | 15735477148 |
| 10 | 156604841764 |
| 11 | 1539509238384 |
| 12 | 14997746124304 |
| 13 | 145132198165132 |
| 14 | 1397493793301476 |
| 15 | 13407313676392384 |
| 16 | 128278229316758192 |
| 17 | 1224872135665718780 |
| 18 | 11678406201771406628 |
| 19 | 111224649402691424912 |
| 20 | 1058446545979095492816 |