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A019033 as a simple table

n a(n)
2 3
3 14
4 23
5 150
6 922
7 5712
8 32636
9 186900
10 1119450
11 7136470
12 47448274
13 320935238
14 2183731382
15 14890842500
16 101740020504

[3,14,23,150,922,5712,32636,186900,1119450,
 7136470,47448274,320935238,2183731382,14890842500,
 101740020504]

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Last modified April 6 20:39 EDT 2020. Contains 333286 sequences. (Running on oeis4.)