# A371117 (b-file synthesized from sequence entry)
0 1
1 0
2 2
3 3
4 32
5 210
6 2184
7 26460
8 373344
9 6150816
10 113958720
11 2362345920
12 54094694400
13 1355708296800
14 36926213869440
15 1085886303989760
16 34291129916574720
17 1157362522046277120
18 41576054625791078400
19 1583864892141097098240
20 63779322541075124428800