# A052770 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 0
4 0
5 120
6 1440
7 14280
8 141120
9 1462104
10 16148160
11 191051520
12 2421936000
13 32840519712
14 475109002368
15 7312951114560
16 119419875993600
17 2063254247160192
18 37617587514390528
19 721991172931734528