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A199397 as a simple table

n a(n)
0 1
1 2
2 11
3 16
4 65
5 178
6 619
7 2784
8 4929
9 24482
10 47371
11 133872
12 659713
13 1196754
14 5945771
15 8408000
16 34643073
17 94509378
18 313886731
19 1475558352
20 2552700993
21 12739900146
22 24581737195
23 70102639264
24 350315469377
25 639249412322
26 3139708751627
27 4623469310128
28 18666316402561

[1,2,11,16,65,178,619,2784,4929,24482,47371,
 133872,659713,1196754,5945771,8408000,34643073,
 94509378,313886731,1475558352,2552700993,
 12739900146,24581737195,70102639264,350315469377,
 639249412322,3139708751627,4623469310128,
 18666316402561]

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Last modified October 26 02:14 EDT 2021. Contains 348256 sequences. (Running on oeis4.)