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A032388
as a simple table
n
a(n)
1
3
2
7
3
19
4
23
5
95
6
287
7
483
8
559
9
655
10
667
11
1639
12
9399
13
39639
14
63883
15
71575
16
164319
17
401947
18
614995
[3,7,19,23,95,287,483,559,655,667,1639,9399,39639, 63883,71575,164319,401947,614995]