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A273436 as a simple table

na(n)
51
645
71540
849840
91632099
1055545735
111987186025
1275078221130
132999597292406
14126693681294180
155650573288138415
16265702055516788800
1713149171975158028874
18683615652343279677360
1937269087381803600233878
202126880663709734887508320
21126841125623724152774643951

[1,45,1540,49840,1632099,55545735,1987186025,
 75078221130,2999597292406,126693681294180,
 5650573288138415,265702055516788800,
 13149171975158028874,683615652343279677360,
 37269087381803600233878,2126880663709734887508320,
 126841125623724152774643951]