# A012570 (b-file synthesized from sequence entry)
0 1
1 -1
2 13
3 -277
4 12185
5 -840489
6 84759717
7 -11842313277
8 2175505004849
9 -510170676389457
10 148514509335632701
11 -52567147994554822501
12 22230968162996350213321
13 -11070593880057710100740473