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 | 7776 |
| 1 | 1419857 |
| 2 | 17210368 |
| 3 | 90224199 |
| 4 | 312500000 |
| 5 | 844596301 |
| 6 | 1934917632 |
| 7 | 3939040643 |
| 8 | 7339040224 |
| 9 | 12762815625 |
| 10 | 21003416576 |
| 11 | 33038369407 |
| 12 | 50049003168 |
| 13 | 73439775749 |
| 14 | 104857600000 |
| 15 | 146211169851 |
| 16 | 199690286432 |
| 17 | 267785184193 |
| 18 | 353305857024 |
| 19 | 459401384375 |
| 20 | 589579257376 |