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A246495
as a simple table
n
a(n)
1
4
2
5
3
11
4
23
5
47
6
283
7
719
8
1439
9
2879
10
34549
11
138197
12
1266767
13
4782969
14
14348907
[4,5,11,23,47,283,719,1439,2879,34549,138197, 1266767,4782969,14348907]