# A012092 (b-file synthesized from sequence entry)
0 1
1 0
2 4
3 -32
4 1936
5 -67328
6 4140096
7 353591808
8 -262064131840
9 130347373404160
10 -65058714844462080
11 36397620373403361280
12 -23130160076947953643520
13 16791590408623398030868480