# A009394 (b-file synthesized from sequence entry)
0 0
1 1
2 -1
3 -3
4 14
5 -35
6 -16
7 1057
8 -10256
9 59865
10 -7936
11 -5446683
12 85543424
13 -726781835
14 -22368256
15 133713611977
16 -2849981597696
17 32440474082865
18 -209865342976
19 -10034804733270963
20 271127940241424384
21 -3854719922524818035