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A139541 as a simple table

n a(n)
0 1
1 3
2 315
3 155925
4 212837625
5 618718975875
6 3287253918823875
7 28845653137679503125
8 388983632561608099640625
9 7637693625347175036443671875
10 209402646126143497974176151796875
11 7752714167528210725497923667975703125
12 377130780679409810741846496828678078515625 

[1,3,315,155925,212837625,618718975875,
 3287253918823875,28845653137679503125,
 388983632561608099640625,
 7637693625347175036443671875,
 209402646126143497974176151796875,
 7752714167528210725497923667975703125,
 377130780679409810741846496828678078515625]

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Last modified April 23 11:27 EDT 2024. Contains 371913 sequences. (Running on oeis4.)