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A140519 as a simple table

n a(n)
1 1
2 3
3 16
4 2830
5 2462064
6 22853860116
7 1622043117414624
8 961742089476282321684
9 4601667243759511495116347104
10 179517749570891592016479828267003018
11 56735527086758553613684823040730404215973136
12 145328824470156271670635015466987199469360063082789418

[1,3,16,2830,2462064,22853860116,1622043117414624,
 961742089476282321684,
 4601667243759511495116347104,
 179517749570891592016479828267003018,
 56735527086758553613684823040730404215973136,
 14532882447015627167063501546698719946936006308278\
 9418]

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Last modified April 22 08:06 EDT 2019. Contains 322329 sequences. (Running on oeis4.)