# A009254 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 0
4 -3
5 12
6 117
7 336
8 -903
9 -2096
10 111529
11 1043328
12 687093
13 -29488704
14 320199453
15 8894706432
16 44530596081
17 -389860902656
18 254346923089
19 170568226222080
20 2006766293627373
21 -6327905330549760
22 -141849542553657147