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 | 64 |
| 2 | 865 |
| 3 | 18840 |
| 4 | 260924 |
| 5 | 4870764 |
| 6 | 78957968 |
| 7 | 1368968852 |
| 8 | 22772982621 |
| 9 | 388437292266 |
| 10 | 6536987996149 |
| 11 | 110788354031138 |
| 12 | 1870242391300687 |
| 13 | 31643467601797592 |
| 14 | 534716690271693434 |
| 15 | 9041935800076605287 |