A089706 - OEIS

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A089706 as a simple table

n	a(n)
2	71
3	751
4	9721
5	79531
6	978521
7	7979771
8	97979771
9	997979371
10	9997979371
11	79997979521
12	979997978551
13	7979997979571
14	97979997979771
15	997979997978571
16	9997979997978571
17	79997979997979731
18	979997979997978531

[71,751,9721,79531,978521,7979771,97979771, 997979371,9997979371,79997979521,979997978551, 7979997979571,97979997979771,997979997978571, 9997979997978571,79997979997979731, 979997979997978531]