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A257620 as a simple table

n a(n)
0 1
1 3
2 3
3 9
4 36
5 9
6 27
7 297
8 297
9 27
10 81
11 2106
12 5346
13 2106
14 81
15 243
16 13851
17 73386
18 73386
19 13851
20 243
21 729
22 87480
23 868239
24 1761264
25 868239
26 87480
27 729
28 2187
29 540189
30 9388791
31 34158753
32 34158753
33 9388791
34 540189
35 2187
36 6561
37 3293622
38 95843088
39 578903274
40 1024762590
41 578903274
42 95843088
43 3293622
44 6561

[1,3,3,9,36,9,27,297,297,27,81,2106,5346,2106,81,
 243,13851,73386,73386,13851,243,729,87480,868239,
 1761264,868239,87480,729,2187,540189,9388791,
 34158753,34158753,9388791,540189,2187,6561,
 3293622,95843088,578903274,1024762590,578903274,
 95843088,3293622,6561]

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Last modified April 7 13:55 EDT 2020. Contains 333305 sequences. (Running on oeis4.)