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 | 1 |
| 2 | 33 |
| 3 | 97 |
| 4 | 1729 |
| 5 | 8001 |
| 6 | 105441 |
| 7 | 627873 |
| 8 | 6989697 |
| 9 | 48363649 |
| 10 | 488206753 |
| 11 | 3701949153 |
| 12 | 35289342529 |
| 13 | 283146701761 |
| 14 | 2610495177057 |
| 15 | 21695983405857 |
| 16 | 196218339243777 |
| 17 | 1667338615773441 |
| 18 | 14917038493453089 |
| 19 | 128562758660255073 |