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 | 8 |
| 2 | 32 |
| 3 | 170 |
| 4 | 1024 |
| 5 | 6553 |
| 6 | 43690 |
| 7 | 299593 |
| 8 | 2097152 |
| 9 | 14913080 |
| 10 | 107374182 |
| 11 | 780903144 |
| 12 | 5726623061 |
| 13 | 42288908760 |
| 14 | 314146179364 |
| 15 | 2345624805922 |
| 16 | 17592186044416 |
| 17 | 132458812569720 |
| 18 | 1000799917193443 |
| 19 | 7585009898729256 |