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 | 1 |
| 2 | 409 |
| 3 | 88469 |
| 4 | 3499607 |
| 5 | 525755773 |
| 6 | 1889074241401 |
| 7 | 14476124563693171 |
| 8 | 3690382506839631667 |
| 9 | 944489835647492584243 |
| 10 | 17945058791198905978063 |
| 11 | 1798278215177468964031733 |
| 12 | 17136765345945336793560989047 |
| 13 | 39126270988987383599688999460333 |