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A161930 as a simple table

n a(n)
0 1
1 23
2 275
3 2277
4 14673
5 78407
6 361514
7 1477750
8 5461235
9 18518565
10 58282576
11 171815888
12 477989151
13 1262643305
14 3183445871
15 7694405993
16 17895700206
17 40182143330
18 87349858045
19 184297593435
20 378236260170
21 756560791350

[1,23,275,2277,14673,78407,361514,1477750,5461235,
 18518565,58282576,171815888,477989151,1262643305,
 3183445871,7694405993,17895700206,40182143330,
 87349858045,184297593435,378236260170,
 756560791350]

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Last modified June 19 04:54 EDT 2021. Contains 345125 sequences. (Running on oeis4.)