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A038033 as a simple table

na(n)
36
424
5180
61320
711130
8103824
91067976
1012014640
11146845710
121938363240
1327489515196
14416924313624
156734931220290
16115455963776160
172093601476474640
1840040128237577184
19805513168073611926

[6,24,180,1320,11130,103824,1067976,12014640,
 146845710,1938363240,27489515196,416924313624,
 6734931220290,115455963776160,2093601476474640,
 40040128237577184,805513168073611926]