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A153757 as a simple table

na(n)
11
22
34
410
540
6280
73400
868920
92296600
10124819000
1111029312600
121581276391000
13367448845658200
14138299522459392600
1584276864426837376600
1683129040425047907584600
17132705616446736897029760600
18342829213074356555028732544600

[1,2,4,10,40,280,3400,68920,2296600,124819000,
 11029312600,1581276391000,367448845658200,
 138299522459392600,84276864426837376600,
 83129040425047907584600,
 132705616446736897029760600,
 342829213074356555028732544600]