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 | 15 |
| 1 | 91 |
| 2 | 2745 |
| 3 | 16561 |
| 4 | 499575 |
| 5 | 3014011 |
| 6 | 90919905 |
| 7 | 548533441 |
| 8 | 16546923135 |
| 9 | 99830072251 |
| 10 | 3011449090665 |
| 11 | 18168524616241 |
| 12 | 548067187577895 |
| 13 | 3306571650083611 |
| 14 | 99745216690086225 |
| 15 | 601777871790600961 |