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 | 1 |
| 1 | 32767 |
| 2 | 14316139 |
| 3 | 1059392917 |
| 4 | 29443836301 |
| 5 | 439667406451 |
| 6 | 4277376525367 |
| 7 | 30436810578889 |
| 8 | 170706760005817 |
| 9 | 794108867905351 |
| 10 | 3177248169415651 |
| 11 | 11229773405170717 |
| 12 | 35778871439504389 |
| 13 | 104382202543721467 |
| 14 | 282325794823047151 |
| 15 | 715027614225987601 |
| 16 | 1709501546902968817 |