# A009795 (b-file synthesized from sequence entry)
0 0
1 2
2 -16
3 288
4 -10368
5 610304
6 -52885504
7 6324756480
8 -997700468736
9 200677417680896
10 -50126593037172736
11 15222954297995034624
12 -5523668414636262162432
13 2360101997206034337234944
14 -1172849951576110533537955840
15 670735996458876867872135577600