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A002105 as a simple table

n a(n)
1 1
2 1
3 4
4 34
5 496
6 11056
7 349504
8 14873104
9 819786496
10 56814228736
11 4835447317504
12 495812444583424
13 60283564499562496
14 8575634961418940416
15 1411083019275488149504
16 265929039218907754399744
17 56906245479134057176170496
18 13722623393637762299131396096
19 3704005473270641755597685653504

[1,1,4,34,496,11056,349504,14873104,819786496,
 56814228736,4835447317504,495812444583424,
 60283564499562496,8575634961418940416,
 1411083019275488149504,265929039218907754399744,
 56906245479134057176170496,
 13722623393637762299131396096,
 3704005473270641755597685653504]

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Last modified May 21 14:41 EDT 2018. Contains 304397 sequences. (Running on oeis4.)