# A109894 (b-file synthesized from sequence entry)
1 1
2 20
3 4620
4 12697776
5 159845400
6 941432800
7 158800433792
8 1895312483064000
9 3438271897004237230080
10 933561026438040
11 2562849175892544
12 640904462719404383808000
13 1528364130975
14 2352733350786
15 959393282698730880000
16 6142080926952