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A146878 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 9
7 41
8 249
9 1137
10 4177
11 27849
12 254297
13 2360945
14 31718257
15 561884345
16 12949529033
17 316511614977 

[1,1,1,1,1,9,41,249,1137,4177,27849,254297,
 2360945,31718257,561884345,12949529033,
 316511614977]

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Last modified August 6 10:20 EDT 2024. Contains 374969 sequences. (Running on oeis4.)