# A374656 (b-file synthesized from sequence entry)
0 4
1 12
2 60
3 360
4 3240
5 42120
6 842400
7 26114400
8 1279605600
9 99809236800
10 12476154600000
11 2507707074600000
12 812497092170400000
13 424935979205119200000
14 359070902428325724000000
15 490490852717092938984000000
16 1083494293652058302215656000000