# A012002 (b-file synthesized from sequence entry)
0 0
1 -1
2 -2
3 14
4 568
5 2144
6 -1061312
7 -65851696
8 3745115008
9 1232648783744
10 50799435228928
11 -36670923310299136
12 -8828746813705828352
13 954888000296009790464
14 1122466427244127979911168