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 | 64 |
| 2 | 1600 |
| 3 | 16060 |
| 4 | 108625 |
| 5 | 586343 |
| 6 | 2734683 |
| 7 | 11446096 |
| 8 | 43787371 |
| 9 | 154644169 |
| 10 | 507763502 |
| 11 | 1559390798 |
| 12 | 4504599056 |
| 13 | 12304311893 |
| 14 | 31936080080 |
| 15 | 79116405604 |
| 16 | 187828358540 |
| 17 | 428877669532 |
| 18 | 944895859570 |
| 19 | 2014476071694 |
| 20 | 4166609485641 |