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A177574 as a simple table

na(n)
01
11
26
390
42520
5113400
67479361
7679851145
881464937000
912443633129640
102360051647753800
11544135452733303200
12149883590538452902825
1348612505145280415315705
1418337020151083296373118050
157959571454218402191668618850
163939389912325851696444898536160

[1,1,6,90,2520,113400,7479361,679851145,
 81464937000,12443633129640,2360051647753800,
 544135452733303200,149883590538452902825,
 48612505145280415315705,
 18337020151083296373118050,
 7959571454218402191668618850,
 3939389912325851696444898536160]