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A147405 as a simple table

n a(n)
1 1
2 1
3 1
4 9
5 25
6 61
7 265
8 2725
9 40501
10 485293
11 5980517
12 124941205
13 4561553811
14 214166188181
15 10710509884487
16 650335804942117 

[1,1,1,9,25,61,265,2725,40501,485293,5980517,
 124941205,4561553811,214166188181,10710509884487,
 650335804942117]

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Last modified April 24 18:17 EDT 2024. Contains 371962 sequences. (Running on oeis4.)