# A009472 (b-file synthesized from sequence entry)
0 1
1 0
2 -12
3 -248
4 -3504
5 115904
6 17130688
7 265254272
8 -452604387072
9 -186145181366272
10 -61549828575435776
11 -19962789503984048128
12 -6701962036325158170624
13 -2365314657819650153562112