n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 12 |
3 | 60 |
4 | 224 |
5 | 720 |
6 | 2112 |
7 | 5824 |
8 | 15360 |
9 | 39168 |
10 | 97280 |
11 | 236544 |
12 | 565248 |
13 | 1331200 |
14 | 3096576 |
15 | 7127040 |
16 | 16252928 |
17 | 36765696 |
18 | 82575360 |
19 | 184287232 |
20 | 408944640 |
21 | 902823936 |
22 | 1983905792 |
23 | 4341104640 |
24 | 9462349824 |
25 | 20552089600 |
26 | 44493176832 |
27 | 96032784384 |
28 | 206695301120 |
29 | 443723808768 |
[0,1,12,60,224,720,2112,5824,15360,39168,97280, 236544,565248,1331200,3096576,7127040,16252928, 36765696,82575360,184287232,408944640,902823936, 1983905792,4341104640,9462349824,20552089600, 44493176832,96032784384,206695301120,443723808768] |