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A019543 as a simple table

n a(n)
0 2
1 4
2 15
3 8
4 256
5 63
6 32
7 16
8 511
9 1024
10 31
11 31
12 1024
13 21846
14 4095
15 32
16 127
17 4095
18 32768
19 8192
20 255 

[2,4,15,8,256,63,32,16,511,1024,31,31,1024,21846,
 4095,32,127,4095,32768,8192,255]

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Last modified April 18 21:51 EDT 2024. Contains 371781 sequences. (Running on oeis4.)