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 | 26 |
| 2 | 676 |
| 3 | 4238 |
| 4 | 26569 |
| 5 | 279219 |
| 6 | 2934369 |
| 7 | 24999522 |
| 8 | 212984836 |
| 9 | 1971051046 |
| 10 | 18240933481 |
| 11 | 163271339451 |
| 12 | 1461412614321 |
| 13 | 13258432080828 |
| 14 | 120285003372304 |
| 15 | 1085258011417172 |
| 16 | 9791619223717321 |
| 17 | 88545977352385817 |
| 18 | 800724571304629609 |