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A194956 as a simple table

n a(n)
1 1
2 1
3 2
4 6
5 20
6 73
7 281
8 1125
9 4636
10 19540
11 83848
12 365107
13 1609285
14 7166523
15 32195965
16 145746024
17 664165843
18 3044370240
19 14027289780
20 64932957320
21 301833739881
22 1408338395737
23 6593747768053
24 30967985680291
25 145859467298446
26 688805924907628
27 3260700755258527

[1,1,2,6,20,73,281,1125,4636,19540,83848,365107,
 1609285,7166523,32195965,145746024,664165843,
 3044370240,14027289780,64932957320,301833739881,
 1408338395737,6593747768053,30967985680291,
 145859467298446,688805924907628,3260700755258527]

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Last modified May 17 08:05 EDT 2022. Contains 353741 sequences. (Running on oeis4.)