# A287084 (b-file synthesized from sequence entry) 1 1 2 40320 3 31088448777 4 50257106410291200 5 114196733016257979480401 6 315745472497043733378660720000 7 992004278721114611076713896739874457 8 3409699209687052091502059492845005192560640 9 12527584332978774512983761712826111596464807512481