[1,12,123,1234,12345,123457,1234578,12345789,
1234578910,123457891011,12345789101112,
1234578910111213,123457891011121314,
12345789101112131415,1234578910111213141516,
123457891011121314151617,
12345789101112131415161718,
1234578910111213141516171819,
123457891011121314151617181920]
|