# A273194 (b-file synthesized from sequence entry)
0 1
1 2
2 20
3 1120
4 30800
5 1121120
6 152472320
7 8277068800
8 523524601600
9 340290991040000
10 27631628472448000
11 2491870494969856000
12 741331472253532160000
13 80177849999112785920000
14 9392262428467497779200000
15 3554032102932101159649280000
16 480238587908700169197608960000