# A101502 (b-file synthesized from sequence entry) 0 1 1 0 2 4 3 0 4 48 5 32 6 640 7 896 8 8960 9 18432 10 130048 11 337920 12 1941504 13 5857280 14 29605888 15 98435072 16 458424320 17 1624375296 18 7174881280 19 26507476992 20 113123524608 21 429538672640 22 1792440008704 23 6929367695360 24 28495396732928