# A009517 (b-file synthesized from sequence entry)
1 1
2 -2
3 32
4 -688
5 29952
6 -1922560
7 160364544
8 -19815696384
9 2743045259264
10 -538516252917760
11 112957538226929664
12 -31810392390007521280
13 9466977656209217159168
14 -3592556624975295837896704