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A246493
as a simple table
n
a(n)
1
3
2
7
3
19
4
47
5
243
6
719
7
1439
8
2879
9
19683
10
59049
11
177147
12
531441
13
1594323
14
4782969
[3,7,19,47,243,719,1439,2879,19683,59049,177147, 531441,1594323,4782969]