# A351165 (b-file synthesized from sequence entry)
1 1
2 6
3 60
4 1584
5 75120
6 5601960
7 592956000
8 84557864160
9 15620794842240
10 3628800457682400
11 1035338990353113600
12 355902198996315787200
13 145077660657865961625600
14 69194697633957032681544000
15 38174841090323471644830720000
16 24122334398251368151021076928000