A082128 - OEIS

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A082128 as a simple table

n	a(n)
0	21
1	4
2	5
3	13
4	8
5	2
6	32
7	16
8	64
9	512
10	131072
11	4194304
12	8589934592
13	9007199254740992
14	75557863725914323419136
15	20769187434139310514121985316880384

[21,4,5,13,8,2,32,16,64,512,131072,4194304, 8589934592,9007199254740992, 75557863725914323419136, 20769187434139310514121985316880384]