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 | 60480 |
| 2 | 2851200 |
| 3 | 13366080 |
| 4 | 42134400 |
| 5 | 93139200 |
| 6 | 588107520 |
| 7 | 684391680 |
| 8 | 1210809600 |
| 9 | 10534043520 |
| 10 | 16817673600 |
| 11 | 38694427200 |
| 12 | 52143537600 |
| 13 | 54939044160 |
| 14 | 59580892800 |
| 15 | 89555155200 |
| 16 | 104432328000 |
| 17 | 136734998400 |
| 18 | 356676566400 |
| 19 | 663924381120 |
| 20 | 1100581171200 |
| 21 | 1200474475200 |