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A000198 as a simple table

n a(n)
1 1
2 1
3 3
4 3
5 5
6 9
7 21
8 21
9 81
10 81
11 81
12 243
13 243
14 441
15 1215
16 1701
17 1701
18 6561
19 6561
20 6561
21 45927
22 45927
23 45927
24 137781
25 137781
26 229635
27 1594323
28 1594323
29 1594323
30 4782969
31 4782969
32 7971615
33 14348907
34 33480783
35 33480783
36 129140163
37 129140163
38 129140163

[1,1,3,3,5,9,21,21,81,81,81,243,243,441,1215,1701,
 1701,6561,6561,6561,45927,45927,45927,137781,
 137781,229635,1594323,1594323,1594323,4782969,
 4782969,7971615,14348907,33480783,33480783,
 129140163,129140163,129140163]

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Last modified December 11 02:18 EST 2019. Contains 329910 sequences. (Running on oeis4.)