n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 6 |
4 | 96 |
5 | 600 |
6 | 1392 |
7 | 2156 |
8 | 10624 |
9 | 22410 |
10 | 62400 |
11 | 82280 |
12 | 210336 |
13 | 280540 |
14 | 495488 |
15 | 955950 |
16 | 1332736 |
17 | 1844976 |
18 | 2924640 |
19 | 3933456 |
20 | 6319200 |
21 | 7954170 |
22 | 10648000 |
23 | 14081980 |
24 | 19826304 |
25 | 25502500 |
26 | 31809856 |
27 | 41037354 |
28 | 52338272 |
29 | 63979916 |
30 | 84001200 |
31 | 98348740 |
32 | 123033600 |
[0,0,6,96,600,1392,2156,10624,22410,62400,82280, 210336,280540,495488,955950,1332736,1844976, 2924640,3933456,6319200,7954170,10648000,14081980, 19826304,25502500,31809856,41037354,52338272, 63979916,84001200,98348740,123033600] |