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 | 5 |
| 2 | 2161 |
| 3 | 30241 |
| 4 | 453601 |
| 5 | 4495130640001 |
| 6 | 152834441760001 |
| 7 | 911300420785759804800001 |
| 8 | 19660095637340203930960075575675174251117567173124497920000000001 |