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 | 1953125 |
| 1 | 2357947691 |
| 2 | 118587876497 |
| 3 | 1801152661463 |
| 4 | 14507145975869 |
| 5 | 78815638671875 |
| 6 | 327381934393961 |
| 7 | 1119130473102767 |
| 8 | 3299763591802133 |
| 9 | 8662995818654939 |
| 10 | 20711912837890625 |
| 11 | 45848500718449031 |
| 12 | 95151694449171437 |
| 13 | 186940255267540403 |
| 14 | 350356403707485209 |
| 15 | 630249409724609375 |