# A371041 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 30
4 348
5 5460
6 108480
7 2609040
8 73713360
9 2393087760
10 87791891040
11 3591843726240
12 162157925160000
13 8007919490450880
14 429418816003457280
15 24849579630222547200
16 1543505958412498080000
17 102430107277414595078400
18 7232759636684706937612800