# A009632 (b-file synthesized from sequence entry)
0 0
1 1
2 0
3 -2
4 12
5 -39
6 60
7 400
8 -4872
9 29449
10 -75240
11 -792054
12 14470500
13 -126336287
14 451892532
15 6486922156
16 -158017858320
17 1804082178225
18 -8296746885072
19 -150859861660106
20 4593579141365820
21 -64784591020059959