# A376516 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 6
4 24
5 120
6 1800
7 20160
8 221760
9 3507840
10 59875200
11 1037836800
12 20776694400
13 459761702400
14 10686605529600
15 268901439206400
16 7318617546240000
17 210804082384896000
18 6440850193262284800
19 209115023566972723200
20 7157303732396353536000
21 257535328655939862528000