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A146461
as a simple table
n
a(n)
1
1
2
1
3
1
4
17
5
49
6
361
7
6061
8
172273
9
5274005
10
274545571
11
26127520797
12
3923980431021
13
871070091426765
[1,1,1,17,49,361,6061,172273,5274005,274545571, 26127520797,3923980431021,871070091426765]