# A013508 (b-file synthesized from sequence entry)
0 1
1 -12
2 -5152
3 -7351872
4 23844355328
5 2971598628507648
6 259172055916070309888
7 31874732857037574011240448
8 5625494806370311291378460131328
9 1331819025115560536529968068424368128
10 357000031318983624394235069073760267010048
11 30988128279193785865476747562711031784709029888