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 | 4 |
| 2 | 484 |
| 3 | 40804 |
| 4 | 88804 |
| 5 | 4008004 |
| 6 | 4088484 |
| 7 | 4848804 |
| 8 | 400080004 |
| 9 | 400880484 |
| 10 | 484088004 |
| 11 | 840884004 |
| 12 | 40000800004 |
| 13 | 40008800484 |
| 14 | 40080840804 |
| 15 | 40804808004 |
| 16 | 48400880004 |
| 17 | 400084080484 |
| 18 | 4000008000004 |
| 19 | 4000088000484 |
| 20 | 4000808040804 |
| 21 | 4080408080004 |
| 22 | 4080488880484 |
| 23 | 4840008800004 |