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A119180
as a simple table
n
a(n)
1
28
2
828828
3
9298828
4
99228828
5
2882992822228828
6
88992922889298828
7
299282229288828999298828
[28,828828,9298828,99228828,2882992822228828, 88992922889298828,299282229288828999298828]