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 | 1024 |
| 2 | 50922 |
| 3 | 815816 |
| 4 | 7238864 |
| 5 | 44693472 |
| 6 | 216134044 |
| 7 | 877751236 |
| 8 | 3130270224 |
| 9 | 10105541204 |
| 10 | 30179587994 |
| 11 | 84719304384 |
| 12 | 226268016376 |
| 13 | 580363147336 |
| 14 | 1440139184616 |
| 15 | 3477556916828 |
| 16 | 8210011147304 |
| 17 | 19021962952188 |
| 18 | 43385173057846 |
| 19 | 97653259485592 |
| 20 | 217359166880016 |