# A007207 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 -2
4 0
5 -12
6 2
7 -78
8 24
9 -548
10 228
11 -4050
12 2030
13 -30960
14 17670
15 -242402
16 152520
17 -1932000
18 1312844
19 -15612150
20 11297052
21 -127551884
22 97291026
23 -1051478274
24 838994486
25 -8732657724
26 7246304736
27 -72983051674
28 62686156026
29 -613243234224
30 543146222970