n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 12 |
3 | 24 |
4 | 396 |
5 | 2160 |
6 | 23160 |
7 | 186480 |
8 | 1845900 |
9 | 17213280 |
10 | 171575712 |
11 | 1703560320 |
12 | 17365421304 |
13 | 178323713568 |
14 | 1856554560432 |
15 | 19487791106784 |
16 | 206411964321420 |
17 | 2201711191213248 |
18 | 23642813637773616 |
19 | 255355132936441824 |
20 | 2772650461148938656 |
[1,0,12,24,396,2160,23160,186480,1845900,17213280, 171575712,1703560320,17365421304,178323713568, 1856554560432,19487791106784,206411964321420, 2201711191213248,23642813637773616, 255355132936441824,2772650461148938656] |