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A234534
as a simple table
n
a(n)
1
1
2
8
3
15
4
127
5
128
6
144
7
255
8
403
9
448
10
512
11
1023
12
29127
13
47360
[1,8,15,127,128,144,255,403,448,512,1023,29127, 47360]