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 | 3 |
| 2 | 29 |
| 3 | 3637 |
| 4 | 6277 |
| 5 | 46687 |
| 6 | 826669 |
| 7 | 16777499 |
| 8 | 16780597 |
| 9 | 404197709 |
| 10 | 775664521 |
| 11 | 10000003129 |
| 12 | 10387420493 |
| 13 | 285311673737 |
| 14 | 305311670611 |
| 15 | 8916100448513 |
| 16 | 8916487869001 |
| 17 | 8926101271799 |
| 18 | 17832200896513 |
| 19 | 17832200899637 |