# A302915 (b-file synthesized from sequence entry) 1 1 2 2 3 4 4 8 5 28 6 56 7 256 8 656 9 2480 10 6688 11 30736 12 73984 13 366560 14 1006720 15 3966976 16 12738560 17 58427648 18 148069632 19 764473600 20 2133585664 21 8939502080 22 28705390592 23 136987259648 24 356634376704 25 1780025034240 26 5455065263104 27 23215437079552 28 73123382895616