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A076193
as a simple table
n
a(n)
1
3
2
5
3
9
4
11
5
17
6
19
7
23
8
51
9
219
10
421
11
2845
12
4691
13
10617
[3,5,9,11,17,19,23,51,219,421,2845,4691,10617]
