# A013474 (b-file synthesized from sequence entry)
0 1
1 -12
2 1568
3 -445632
4 76844288
5 278739068928
6 -467851397312512
7 -2679102291371999232
8 13369295760767407751168
9 198192229563606535497842688
10 -1400852802790123139561996419072
11 -65350779506647538962325382377766912