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A342181 as a simple table

na(n)
01
11
22
314
4588
5252252
61875745872
7409565359659456
84443872618422784042496
94052080633200943761869999708160
10524883317743439723147432404145717855232000
1116321637725818077271987866314412476606229589461376000000

[1,1,2,14,588,252252,1875745872,409565359659456,
 4443872618422784042496,
 4052080633200943761869999708160,
 524883317743439723147432404145717855232000,
 16321637725818077271987866314412476606229589461376\
 000000]