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A229847 as a simple table

n a(n)
1 0
2 3
3 3
4 3
5 15
6 3
7 9
8 81
9 81
10 9
11 15
12 423
13 987
14 423
15 15
16 33
17 2247
18 13401
19 13401
20 2247
21 33
22 63
23 11925
24 178311
25 453837
26 178311
27 11925
28 63
29 129
30 63291
31 2381469
32 15269193
33 15269193
34 2381469
35 63291
36 129
37 255
38 335943
39 31783299
40 514371027
41 1296261759
42 514371027

[0,3,3,3,15,3,9,81,81,9,15,423,987,423,15,33,2247,
 13401,13401,2247,33,63,11925,178311,453837,178311,
 11925,63,129,63291,2381469,15269193,15269193,
 2381469,63291,129,255,335943,31783299,514371027,
 1296261759,514371027]

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Last modified January 16 23:09 EST 2022. Contains 350376 sequences. (Running on oeis4.)