# A012043 (b-file synthesized from sequence entry)
0 1
1 1
2 -7
3 121
4 -4271
5 262801
6 -25257079
7 3510517193
8 -667413187039
9 166471455235489
10 -52750545434135399
11 20700581434214572441
12 -9854557734715140280207
13 5594838313934367657655601