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A259116 as a simple table

n a(n)
1 1
2 1
3 1
4 2
5 4
6 22
7 145
8 1875
9 31929
10 698183
11 18056523
12 538340256
13 18141423039
14 681939320185 

[1,1,1,2,4,22,145,1875,31929,698183,18056523,
 538340256,18141423039,681939320185]

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Last modified April 24 10:11 EDT 2024. Contains 371935 sequences. (Running on oeis4.)