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 | 33 |
| 2 | 1089 |
| 3 | 20953 |
| 4 | 518001 |
| 5 | 12462017 |
| 6 | 289951889 |
| 7 | 6897033117 |
| 8 | 163328551845 |
| 9 | 3859116053775 |
| 10 | 91371814060913 |
| 11 | 2162098249763885 |
| 12 | 51154844975987973 |
| 13 | 1210540438174818673 |
| 14 | 28644458404800644097 |
| 15 | 677799353119887717715 |