# A012909 (b-file synthesized from sequence entry)
0 1
1 0
2 4
3 -6
4 107
5 -490
6 7780
7 -66045
8 1113185
9 -14056740
10 264337750
11 -4409272175
12 93796875575
13 -1927625491350
14 46373594683000
15 -1124449061497125
16 30408904419466625
17 -845698069130473000