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) |
|---|---|
| 0 | 1 |
| 1 | 42 |
| 2 | 86436 |
| 3 | 8716379112 |
| 4 | 43069878018202896 |
| 5 | 10428149586506991068675232 |
| 6 | 123719154344427992379322114891976256 |
| 7 | 71922158596935138096613542488243622890285377152 |