# A012998 (b-file synthesized from sequence entry)
0 2
1 -8
2 72
3 -3936
4 193920
5 -21876736
6 2967878656
7 -589063146496
8 149737853943808
9 -48291040167362560
10 19310260456438693888
11 -9310185546185219768320
12 5359263862743046978797568