n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 9 |
4 | 901 |
5 | 901009 |
6 | 901009000901 |
7 | 901009000901000000901009 |
8 | 901009000901000000901009000000000000901009000901 |
9 | 901009000901000000901009000000000000901009000901000000000000000000000000901009000901000000901009 |
[0,1,9,901,901009,901009000901, 901009000901000000901009, 901009000901000000901009000000000000901009000901, 90100900090100000090100900000000000090100900090100\ 0000000000000000000000901009000901000000901009] |