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 | 0 |
| 1 | 0 |
| 2 | 24 |
| 3 | 216 |
| 4 | 960 |
| 5 | 3000 |
| 6 | 7560 |
| 7 | 16464 |
| 8 | 32256 |
| 9 | 58320 |
| 10 | 99000 |
| 11 | 159720 |
| 12 | 247104 |
| 13 | 369096 |
| 14 | 535080 |
| 15 | 756000 |
| 16 | 1044480 |
| 17 | 1414944 |
| 18 | 1883736 |
| 19 | 2469240 |
| 20 | 3192000 |
| 21 | 4074840 |
| 22 | 5142984 |
| 23 | 6424176 |
| 24 | 7948800 |
| 25 | 9750000 |
| 26 | 11863800 |
| 27 | 14329224 |
| 28 | 17188416 |
| 29 | 20486760 |
| 30 | 24273000 |
| 31 | 28599360 |
| 32 | 33521664 |