# A371233 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 6
4 12
5 40
6 1620
7 16128
8 154560
9 3378240
10 67828320
11 1247843520
12 28996704000
13 773215822080
14 20900234234880
15 609432997219200
16 19677823129036800
17 674330219708221440
18 24327437969162280960
19 936555233579552563200
20 38250260222888409292800