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A052878 as a simple table

na(n)
00
12
26
334
4276
52928
638520
7606240
811118240
9232928640
105488922880
11143707737600
124138613740800
13130021152307200
144425207423436800
15162194949242726400
166369480464675328000
17266808295408951296000
1811874724735152254976000
19559591803705456377856000

[0,2,6,34,276,2928,38520,606240,11118240,
 232928640,5488922880,143707737600,4138613740800,
 130021152307200,4425207423436800,
 162194949242726400,6369480464675328000,
 266808295408951296000,11874724735152254976000,
 559591803705456377856000]