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A163290 as a simple table

na(n)
01
150
22450
3120050
45881225
5288120000
614114940000
7691488000000
833875854559400
91659571130851200
1081302047554268800
113982970548016611200
12195124905996721243200
139559128916780140902400
14468299754871670360217600

[1,50,2450,120050,5881225,288120000,14114940000,
 691488000000,33875854559400,1659571130851200,
 81302047554268800,3982970548016611200,
 195124905996721243200,9559128916780140902400,
 468299754871670360217600]