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A147467 as a simple table

n a(n)
1 1
2 1
3 1
4 5
5 17
6 39
7 155
8 1391
9 19355
10 265987
11 4290113
12 107056079
13 4105155205
14 210787717557
15 13820630859039

[1,1,1,5,17,39,155,1391,19355,265987,4290113,
 107056079,4105155205,210787717557,13820630859039]

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Last modified July 2 21:48 EDT 2022. Contains 355029 sequences. (Running on oeis4.)