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 | 0 |
| 1 | 10 |
| 2 | 174 |
| 3 | 2298 |
| 4 | 27258 |
| 5 | 305574 |
| 6 | 3309444 |
| 7 | 35022618 |
| 8 | 364559760 |
| 9 | 3748221288 |
| 10 | 38170570414 |
| 11 | 385768464918 |
| 12 | 3874673308452 |
| 13 | 38718126671076 |
| 14 | 385227806897448 |
| 15 | 3818752082440794 |
| 16 | 37735160423265504 |
| 17 | 371852044352248824 |
| 18 | 3655440051907792536 |
| 19 | 35857177310350860328 |