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 | 16 |
| 2 | 5 |
| 3 | 300 |
| 4 | 160 |
| 5 | 20 |
| 6 | 6840 |
| 7 | 4850 |
| 8 | 1075 |
| 9 | 75 |
| 10 | 186120 |
| 11 | 159650 |
| 12 | 48175 |
| 13 | 6100 |
| 14 | 275 |
| 15 | 5916240 |
| 16 | 5846700 |
| 17 | 2168650 |
| 18 | 379700 |
| 19 | 31550 |
| 20 | 1000 |
| 21 | 215717040 |
| 22 | 238437900 |
| 23 | 103057800 |
| 24 | 22426825 |
| 25 | 2605175 |
| 26 | 153875 |
| 27 | 3625 |
| 28 | 8888140800 |
| 29 | 10772348400 |