# A012491 (b-file synthesized from sequence entry)
0 1
1 1
2 -3
3 -75
4 1337
5 144105
6 3933237
7 118760733
8 129911988593
9 47180864336337
10 13805291952312685
11 5130037600431416453
12 2642764719782227835049
13 1617152674535806453668025