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A203006 as a simple table

na(n)
11
22
35
417
591
6758
710094
8215094
97378716
10408057060
1136439600740
125258207000160
131226732478115680
14462844011818878560
15282472779283129656000
16278884771717353348456000
17445462025196173918554440000
181151206495594319717393795136000

[1,2,5,17,91,758,10094,215094,7378716,408057060,
 36439600740,5258207000160,1226732478115680,
 462844011818878560,282472779283129656000,
 278884771717353348456000,
 445462025196173918554440000,
 1151206495594319717393795136000]