# A153467 (b-file synthesized from sequence entry) 1 1 2 6 3 48 4 528 5 8160 6 179520 7 5666304 8 257819136 9 16962407424 10 1617060046848 11 223709857824768 12 44962767953608704 13 13140310268741124096 14 5587767779596757434368 15 3459297434976642415460352