A113765 - OEIS

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A113765 as a simple table

n	a(n)
0	1
1	7
2	17
3	717
4	17717
5	71717717
6	1771771717717
7	717177171771771717717
8	1771771717717717177171771771717717
9	7171771717717717177171771771717717717177171771771717717

[1,7,17,717,17717,71717717,1771771717717, 717177171771771717717, 1771771717717717177171771771717717, 71717717177177171771717717717177177171771717717717\ 17717]