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 | 11 |
| 2 | 35 |
| 3 | 965 |
| 4 | 8755 |
| 5 | 8783 |
| 6 | 237449 |
| 7 | 2138185 |
| 8 | 6415985 |
| 9 | 519743405 |
| 10 | 4677875401 |
| 11 | 14033861347 |
| 12 | 378916960525 |
| 13 | 3410263045325 |
| 14 | 3410267502725 |
| 15 | 30692424759805 |
| 16 | 276231889624955 |
| 17 | 828695755304725 |
| 18 | 67124359204727825 |
| 19 | 604119244624305025 |