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 | 4 |
| 2 | 73 |
| 3 | 830 |
| 4 | 8769 |
| 5 | 90406 |
| 6 | 921500 |
| 7 | 9335419 |
| 8 | 94238543 |
| 9 | 949152464 |
| 10 | 9544947487 |
| 11 | 95881945185 |
| 12 | 962392087980 |
| 13 | 9653934463159 |
| 14 | 96795058249196 |
| 15 | 970155429577329 |
| 16 | 9720761658966073 |
| 17 | 97376442842345765 |
| 18 | 975260045712259138 |
| 19 | 9765942332723655391 |
| 20 | 97779180397439081158 |