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 | 27 |
| 2 | 3375 |
| 3 | 42875 |
| 4 | 250047 |
| 5 | 970299 |
| 6 | 2924207 |
| 7 | 7414875 |
| 8 | 16581375 |
| 9 | 33698267 |
| 10 | 63521199 |
| 11 | 112678587 |
| 12 | 190109375 |
| 13 | 307546875 |
| 14 | 480048687 |
| 15 | 726572699 |
| 16 | 1070599167 |
| 17 | 1540798875 |
| 18 | 2171747375 |
| 19 | 3004685307 |
| 20 | 4088324799 |
| 21 | 5479701947 |
| 22 | 7245075375 |