# A013260 (b-file synthesized from sequence entry)
0 0
1 0
2 -1
3 1
4 -6
5 23
6 -150
7 929
8 -8120
9 73387
10 -783720
11 8979419
12 -114601608
13 1572411917
14 -23422214816
15 373361085733
16 -6370742969760
17 115548671959175
18 -2223018007825536
19 45175620448879391