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A202491 as a simple table

na(n)
1174720
22822400
381920160
42377732644
556953820952
61364214656016
734683335205048
8881777464888644
922015082631334650
10549644193193005625
1113795021325301502000
12346228734374528569600
138677470058423398780000

[174720,2822400,81920160,2377732644,56953820952,
 1364214656016,34683335205048,881777464888644,
 22015082631334650,549644193193005625,
 13795021325301502000,346228734374528569600,
 8677470058423398780000]