# A009828 (b-file synthesized from sequence entry)
0 0
1 1
2 2
3 1
4 -8
5 -19
6 48
7 253
8 -832
9 -5447
10 34304
11 225721
12 -1992704
13 -14615899
14 149382912
15 1266041845
16 -14491045888
17 -140130487823
18 1792468533248
19 19419956236657
20 -275860960329728
21 -3304321034706211
22 51650706246205440