# A009693 (b-file synthesized from sequence entry) 0 1 1 2 2 8 3 48 4 -256 5 -6656 6 930816 7 -94216192 8 9099706368 9 -822565076992 10 27885670498304 11 20948024601608192 12 -10620485000782413824 13 3800373452911396519936 14 -1166459964091299721641984