# A012247 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 0
4 -3
5 -4
6 21
7 136
8 185
9 -7408
10 -67159
11 644416
12 11805621
13 -84562880
14 -2380474563
15 15811723136
16 591392066161
17 -4005496370944
18 -181472052075695
19 1317763889887232
20 68002767860495981