# A172401 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 32
5 332
6 6928
7 292334
8 24875760
9 4254812880
10 1459549877168
11 1002824206109916
12 1379081986798078000
13 3794489305535947254732
14 20884859614892223147785056
15 229923086002576723635638394810