# A109520 (b-file synthesized from sequence entry) 1 -1 2 -2 3 -14 4 -180 5 -3344 6 -80750 7 -2394792 8 -84150248 9 -3417051136 10 -157409163162 11 -8109659900000 12 -462005414448732 13 -28837128777928704 14 -1956971256267512966 15 -143459789419986793600 16 -11297467798871681250000 17 -951158499840260908777472