# A182430 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 1
4 8
5 56
6 408
7 3228
8 28032
9 267264
10 2787840
11 31662720
12 389560320
13 5166650880
14 73528680960
15 1118124000000
16 18098712576000
17 310759981056000
18 5642339254272000
19 108022399414272000
20 2175029897822208000