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A218696 as a simple table

n a(n)
3 1
4 15
5 222
6 3680
7 69345
8 1477182
9 35234220
10 932070708
11 27109785510
12 860394764515
13 29600058300780
14 1097511032533500
15 43637308561557074
16 1852311640075120980
17 83612841417061582320
18 3999611090385007608840
19 202111299843794061251580
20 10758947714752854861908379

[1,15,222,3680,69345,1477182,35234220,932070708,
 27109785510,860394764515,29600058300780,
 1097511032533500,43637308561557074,
 1852311640075120980,83612841417061582320,
 3999611090385007608840,202111299843794061251580,
 10758947714752854861908379]

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Last modified April 19 10:28 EDT 2024. Contains 371782 sequences. (Running on oeis4.)