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A186002 as a simple table

na(n)
01
11
22
316
4768
5294912
61132462080
752183852646400
833664847019245568000
9347485857744891213250560000
1064560982045934655213753964953600000
11239901585047846581083822477336190648320000000

[1,1,2,16,768,294912,1132462080,52183852646400,
 33664847019245568000,347485857744891213250560000,
 64560982045934655213753964953600000,
 239901585047846581083822477336190648320000000]