# A013304 (b-file synthesized from sequence entry)
0 1
1 0
2 -3
3 -90
4 -4095
5 -283500
6 -28534275
7 -4001347350
8 -754083705375
9 -185224922883000
10 -57754322803051875
11 -22343321962162451250
12 -10514758311176393649375
13 -5917397284663573271062500