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A122591 as a simple table

n a(n)
1 1
2 1
3 3
4 15
5 261
6 68853
7 4740941175
8 22476523239032929731
9 505194096914787342916581691483319031273
10 255221075557547546310804864838512137564534415781651685947633570258183940865705 

[1,1,3,15,261,68853,4740941175,
 22476523239032929731,
 505194096914787342916581691483319031273,
 25522107555754754631080486483851213756453441578165\
 1685947633570258183940865705]

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Last modified April 16 05:35 EDT 2024. Contains 371697 sequences. (Running on oeis4.)