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 | 7 |
| 2 | 79 |
| 3 | 727 |
| 4 | 6553 |
| 5 | 59029 |
| 6 | 531383 |
| 7 | 4782961 |
| 8 | 43046623 |
| 9 | 387420479 |
| 10 | 3486784393 |
| 11 | 31381059607 |
| 12 | 282429536453 |
| 13 | 2541865828309 |
| 14 | 22876792454939 |
| 15 | 205891132094623 |
| 16 | 1853020188851807 |
| 17 | 16677181699666513 |
| 18 | 150094635296999111 |