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 | 2 |
| 2 | 17 |
| 3 | 730 |
| 4 | 65537 |
| 5 | 9765626 |
| 6 | 2176782337 |
| 7 | 678223072850 |
| 8 | 281474976710657 |
| 9 | 150094635296999122 |
| 10 | 100000000000000000001 |
| 11 | 81402749386839761113322 |
| 12 | 79496847203390844133441537 |
| 13 | 91733330193268616658399616010 |