# A012429 (b-file synthesized from sequence entry) 0 1 1 0 2 12 3 -360 4 17360 5 -1431360 6 176717376 7 -30259605376 8 6872523424000 9 -2001253898164224 10 727157103049997312 11 -322526390192253356032 12 171508583202445765136384 13 -107708920891668309118730240