# A013454 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 -160
4 0
5 -261120
6 3942400
7 -1538068480
8 111522611200
9 -25458261360640
10 5279051703910400
11 -1021353507684352000
12 440307608869404672000
13 -89935097031558126632960