# A343445 (b-file synthesized from sequence entry) 0 -1 1 1 2 3 3 24 4 315 5 5760 6 135135 7 3870720 8 130945815 9 5109350400 10 225881530875 11 11158821273600 12 609202488769875 13 36422392637030400 14 2366751668870964375 15 166086110424858624000 16 12517749576658530579375