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 | 3 |
| 2 | 6 |
| 3 | 30 |
| 4 | 44 |
| 5 | 100 |
| 6 | 1090 |
| 7 | 1342 |
| 8 | 6020 |
| 9 | 39040 |
| 10 | 845340 |
| 11 | 47629064 |
| 12 | 1446402032 |
| 13 | 288087704535697 |