# A365603 (b-file synthesized from sequence entry)
0 1
1 4
2 32
3 404
4 6924
5 150000
6 3927480
7 120582360
8 4246964280
9 168767136000
10 7468938047520
11 364284571992480
12 19412919898230240
13 1122216138563359680
14 69941868616009932480
15 4675040053248335097600
16 333605090142406849939200
17 25312518953112479346316800