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A147139 as a simple table

n a(n)
1 1
2 1
3 1
4 5
5 19
6 89
7 531
8 4899
9 96559
10 2300395
11 69316227
12 2985544439
13 203665387955 

[1,1,1,5,19,89,531,4899,96559,2300395,69316227,
 2985544439,203665387955]

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Last modified August 15 07:32 EDT 2024. Contains 375173 sequences. (Running on oeis4.)