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) |
|---|---|
| 3 | 9 |
| 4 | 160 |
| 5 | 3125 |
| 6 | 68040 |
| 7 | 1647086 |
| 8 | 44040192 |
| 9 | 1291401630 |
| 10 | 41250000000 |
| 11 | 1426558353055 |
| 12 | 53125098504192 |
| 13 | 2120125746145771 |
| 14 | 90285055457658880 |
| 15 | 4087009643554687500 |
| 16 | 195996655783163985920 |
| 17 | 9926883142636041170124 |
| 18 | 529537075346699234869248 |