# A009159 (b-file synthesized from sequence entry)
0 1
1 0
2 4
3 56
4 1744
5 86208
6 6199744
7 608357504
8 77889982720
9 12588540708864
10 2503565961032704
11 600347512023062528
12 170721835772956659712
13 56780394898390577528832
14 21828678118361789793746944