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 | 14 |
| 2 | 588 |
| 3 | 2520 |
| 4 | 11466 |
| 5 | 167580 |
| 6 | 10999296 |
| 7 | 67858560 |
| 8 | 132723360 |
| 9 | 8644446720 |
| 10 | 31002402816 |
| 11 | 65367751680 |
| 12 | 10941315840000 |
| 13 | 13980221805312 |
| 14 | 24365070213120 |
| 15 | 225855341712000 |
| 16 | 317483934427296 |
| 17 | 901703887257600 |
| 18 | 1550629681348608 |
| 19 | 8494794723340800 |