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A212392 as a simple table

n a(n)
1 1
2 2
3 9
4 56
5 400
6 3096
7 25256
8 213832
9 1861272
10 16552320
11 149737632
12 1373597892
13 12747475260
14 119465392536
15 1129016386080
16 10747541655584
17 102960795706704
18 991886971036248
19 9603034303017640
20 93386133268757760
21 911779906476551616
22 8934398271363272642

[1,2,9,56,400,3096,25256,213832,1861272,16552320,
 149737632,1373597892,12747475260,119465392536,
 1129016386080,10747541655584,102960795706704,
 991886971036248,9603034303017640,
 93386133268757760,911779906476551616,
 8934398271363272642]

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Last modified May 25 04:50 EDT 2019. Contains 323539 sequences. (Running on oeis4.)