A047900 - OEIS

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A047900 as a simple table

n	a(n)
1	8
2	64
3	640
4	6400
5	64000
6	640000
7	6400000
8	64000000
9	640000000
10	6400000000
11	64000000000
12	640000000000
13	6400000000000
14	64000000000000
15	640000000000000
16	6400000000000000
17	64000000000000000
18	640000000000000000

[8,64,640,6400,64000,640000,6400000,64000000, 640000000,6400000000,64000000000,640000000000, 6400000000000,64000000000000,640000000000000, 6400000000000000,64000000000000000, 640000000000000000]