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A209890 as a simple table

n a(n)
1 7
2 34
3 164
4 792
5 3824
6 18464
7 89152
8 430464
9 2078464
10 10035712
11 48456704
12 233969664
13 1129705472
14 5454700544
15 26337624064
16 127169298432
17 614027689984
18 2964787953664
19 14315262574592
20 69120202113024
21 333741858750464

[7,34,164,792,3824,18464,89152,430464,2078464,
 10035712,48456704,233969664,1129705472,5454700544,
 26337624064,127169298432,614027689984,
 2964787953664,14315262574592,69120202113024,
 333741858750464]

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Last modified April 23 01:19 EDT 2024. Contains 371906 sequences. (Running on oeis4.)