# A012122 (b-file synthesized from sequence entry)
0 1
1 -1
2 5
3 -109
4 4073
5 -295161
6 30105261
7 -4622444709
8 920180967249
9 -244553774342769
10 80285311139524821
11 -32887829518696856925
12 16096767138947015536185
13 -9423401435342942243589225