# A147684 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 420
4 40350
5 19369350
6 9212531290
7 13126885205000
8 17810026933803520
9 55560479543584645500
10 164686892656273830526336
11 953018107457232657556038400