表格开始
.....1.........1...........1...........1..............1............1........1
.....2.........6..........14..........34.............78..........178......398
.....6........74.........852.......10210.........124466......1539739.19271229
....24......1880......152922....13745475.....1301306034.128342085219
...120.....80316....62038644.55575194220.54180777470296
...720...5141864.47286888510
..5040.458608016
.40320