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 | 1024 |
| 1 | 5120 |
| 2 | 26624 |
| 3 | 148480 |
| 4 | 777216 |
| 5 | 4249600 |
| 6 | 25123840 |
| 7 | 134268928 |
| 8 | 741121024 |
| 9 | 3811486720 |
| 10 | 19819736064 |
| 11 | 112733967360 |
| 12 | 644174359552 |
| 13 | 3220871798784 |
| 14 | 22009290649600 |
| 15 | 142032743280640 |
| 16 | 881678229782528 |
| 17 | 6174273912848384 |
| 18 | 44101956520460288 |
| 19 | 312415523110846464 |