# A052861 (b-file synthesized from sequence entry)
0 0
1 0
2 2
3 15
4 116
5 1030
6 10644
7 127428
8 1750944
9 27325296
10 479288160
11 9355658400
12 201405744000
13 4743245520000
14 121334466758400
15 3350276227872000
16 99309556729958400
17 3145135939426252800