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 | 25 |
| 2 | 395 |
| 3 | 5045 |
| 4 | 56931 |
| 5 | 592725 |
| 6 | 5834515 |
| 7 | 55132165 |
| 8 | 505157411 |
| 9 | 4519668725 |
| 10 | 39685517235 |
| 11 | 343261312485 |
| 12 | 2933027514691 |
| 13 | 24811827085525 |
| 14 | 208162421081555 |
| 15 | 1734382406904005 |
| 16 | 14367095262780771 |
| 17 | 118431759773683125 |