# A012052 (b-file synthesized from sequence entry)
0 1
1 0
2 -4
3 -136
4 -7408
5 -644416
6 -84562880
7 -15811723136
8 -4005496370944
9 -1317763889887232
10 -544096638435718144
11 -274416039275290634240
12 -165481485047921126273024
13 -117299354914466636092850176