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A052600 as a simple table

na(n)
01
12
210
360
4504
55040
661200
7856800
813749120
9247484160
104953312000
11108972864000
122615827737600
1368011521177600
141904409771264000
1557132293137920000
161828254303203328000
1762160646308913152000

[1,2,10,60,504,5040,61200,856800,13749120,
 247484160,4953312000,108972864000,2615827737600,
 68011521177600,1904409771264000,57132293137920000,
 1828254303203328000,62160646308913152000]