n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 12 |
4 | 24 |
5 | 80 |
6 | 11160 |
7 | 87696 |
8 | 715680 |
9 | 62337600 |
10 | 1065980160 |
11 | 15842534400 |
12 | 1109943362880 |
13 | 31591940440320 |
14 | 731706348941568 |
15 | 46767587926752000 |
16 | 1889337264901632000 |
17 | 61735665488234250240 |
18 | 3896148715287564902400 |
19 | 201584132714100384460800 |
20 | 8661099107269708639948800 |
21 | 567405718655558932535500800 |
[1,0,0,12,24,80,11160,87696,715680,62337600, 1065980160,15842534400,1109943362880, 31591940440320,731706348941568,46767587926752000, 1889337264901632000,61735665488234250240, 3896148715287564902400,201584132714100384460800, 8661099107269708639948800, 567405718655558932535500800] |