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 | 105 |
| 2 | 6650 |
| 3 | 330750 |
| 4 | 14266875 |
| 5 | 560896875 |
| 6 | 20682062500 |
| 7 | 728227500000 |
| 8 | 24779833203125 |
| 9 | 821666548828125 |
| 10 | 26708267167968750 |
| 11 | 854772944238281250 |
| 12 | 27023254648193359375 |
| 13 | 846046877171630859375 |
| 14 | 26282219820458984375000 |
| 15 | 811330550012329101562500 |