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 | 65536 |
| 3 | 43046721 |
| 4 | 68719476736 |
| 5 | 152587890625 |
| 6 | 2821109907456 |
| 7 | 33232930569601 |
| 8 | 281474976710656 |
| 9 | 10000000000000000 |
| 10 | 45949729863572161 |
| 11 | 150094635296999121 |
| 12 | 184884258895036416 |
| 13 | 665416609183179841 |
| 14 | 2177953337809371136 |
| 15 | 6568408355712890625 |
| 16 | 18446744073709551616 |