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 | 24 |
| 2 | 855 |
| 3 | 44368 |
| 4 | 2691711 |
| 5 | 174342216 |
| 6 | 11767964475 |
| 7 | 817028472960 |
| 8 | 57906884939751 |
| 9 | 4169295435709000 |
| 10 | 303941636737938639 |
| 11 | 22381156868522560176 |
| 12 | 1661800897452497728851 |
| 13 | 124251574792869522460584 |
| 14 | 9345493446918377993036595 |
| 15 | 706519304586940156873850720 |