# A013316 (b-file synthesized from sequence entry)
1 1
2 2
3 0
4 -12
5 -60
6 32
7 3360
8 26768
9 -70560
10 -4368928
11 -44014080
12 286606848
13 15535016640
14 175871587712
15 -2270496184320
16 -116296341590272
17 -1366735787784960
18 31677729930493952
19 1572363556732784640