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 | 336 |
| 2 | 1080 |
| 3 | 3078 |
| 4 | 6048 |
| 5 | 6552 |
| 6 | 19845 |
| 7 | 47616 |
| 8 | 239760 |
| 9 | 435708 |
| 10 | 599400 |
| 11 | 760320 |
| 12 | 873180 |
| 13 | 997920 |
| 14 | 1468800 |
| 15 | 1602300 |
| 16 | 2004480 |
| 17 | 4312440 |
| 18 | 4612608 |
| 19 | 4713984 |
| 20 | 10181808 |
| 21 | 10665984 |
| 22 | 11554816 |
| 23 | 12160512 |
| 24 | 24149664 |
| 25 | 31244850 |
| 26 | 46431744 |
| 27 | 56439504 |
| 28 | 64995840 |
| 29 | 116958492 |