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 | 16384 |
| 2 | 3342081 |
| 3 | 68892600 |
| 4 | 559416917 |
| 5 | 2772658693 |
| 6 | 10269723035 |
| 7 | 31770135236 |
| 8 | 87719331172 |
| 9 | 225263690895 |
| 10 | 552379261275 |
| 11 | 1315281342539 |
| 12 | 3072993757981 |
| 13 | 7087865594659 |
| 14 | 16189704679316 |
| 15 | 36662195998974 |
| 16 | 82296709582927 |