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 | 9765625 |
| 2 | 3486784401 |
| 3 | 137858491849 |
| 4 | 2015993900449 |
| 5 | 16679880978201 |
| 6 | 95367431640625 |
| 7 | 420707233300201 |
| 8 | 1531578985264449 |
| 9 | 4808584372417849 |
| 10 | 13422659310152401 |
| 11 | 34050628916015625 |
| 12 | 79792266297612001 |
| 13 | 174887470365513049 |
| 14 | 362033331456891249 |
| 15 | 713342911662882601 |