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A165328 as a simple table

n a(n)
1 1
2 1
3 3
4 12
5 48
6 197
7 903
8 4298
9 20862
10 103049
11 518859
12 2647296
13 13651092
14 71039373
15 372693519
16 1968822294
17 10463661690
18 55909013009
19 300159426963
20 1618362990804
21 8759313066840
22 47574827600981
23 259215937709463

[1,1,3,12,48,197,903,4298,20862,103049,518859,
 2647296,13651092,71039373,372693519,1968822294,
 10463661690,55909013009,300159426963,
 1618362990804,8759313066840,47574827600981,
 259215937709463]

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Last modified June 25 04:00 EDT 2019. Contains 324342 sequences. (Running on oeis4.)