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A188707 as a simple table

n a(n)
1 5
2 21
3 90
4 387
5 1665
6 7164
7 30825
8 132633
9 570690
10 2455551
11 10565685
12 45461772
13 195611805
14 841673709
15 3621533130
16 15582644523
17 67048623225
18 288495182556
19 1241330043105
20 5341164667857
21 22981833209970
22 98885672046279

[5,21,90,387,1665,7164,30825,132633,570690,
 2455551,10565685,45461772,195611805,841673709,
 3621533130,15582644523,67048623225,288495182556,
 1241330043105,5341164667857,22981833209970,
 98885672046279]

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Last modified March 29 11:45 EDT 2024. Contains 371278 sequences. (Running on oeis4.)