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 | 81 |
| 2 | 6561 |
| 3 | 165783 |
| 4 | 3227589 |
| 5 | 48992069 |
| 6 | 659747611 |
| 7 | 8138711727 |
| 8 | 95444167901 |
| 9 | 1083046694943 |
| 10 | 12066441712663 |
| 11 | 133097165591799 |
| 12 | 1461908430267595 |
| 13 | 16040101557258779 |
| 14 | 176117037501045883 |
| 15 | 1936527748635116761 |