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 | 8 |
| 2 | 913 |
| 3 | 55440 |
| 4 | 3774889 |
| 5 | 250758892 |
| 6 | 16718653553 |
| 7 | 1113666564608 |
| 8 | 74192202677913 |
| 9 | 4942510226322656 |
| 10 | 329259659094878233 |
| 11 | 21934564726533463456 |
| 12 | 1461233359853832299585 |
| 13 | 97344209607823094421972 |