# A080775 (b-file synthesized from sequence entry) 0 1 1 24 2 1152 3 82944 4 7962624 5 955514880 6 137594142720 7 23115815976960 8 4438236667576320 9 958659120196485120 10 230078188847156428800 11 60740641855649297203200 12 17493304854426997594521600 13 5457911114581223249490739200 14 1833858134499291011828888371200 15 660188928419744764258399813632000