# A365330 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 6
4 48
5 600
6 8640
7 131040
8 2257920
9 42819840
10 885427200
11 19918483200
12 483791616000
13 12622171161600
14 352200296448000
15 10466625641472000
16 330077933273088000
17 11010660024139776000
18 387369218691366912000
19 14335266857678807040000
20 556691771706962411520000