# A009276 (b-file synthesized from sequence entry)
0 1
1 1
2 -1
3 -4
4 9
5 52
6 -175
7 -1370
8 5985
9 60216
10 -320063
11 -3929550
12 24549745
13 354693796
14 -2543955167
15 -42233123938
16 341610526145
17 6404634620016
18 -57626692351871
19 -1203767371104790
20 11918048043239377
21 274395314816604636