# A012146 (b-file synthesized from sequence entry)
0 1
1 2
2 16
3 440
4 27904
5 2850176
6 425017984
7 88153419008
8 24337836937216
9 8628418353065984
10 3819956976511713280
11 2065506026582536355840
12 1339535792840983753424896
13 1026285196477087825278599168